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84615506115101 = 13171866120517421
BaseRepresentation
bin10011001111010100010101…
…001011110011101000011101
3102002121011102002220001010122
4103033110111023303220131
542042320024031140401
6455543454334444325
723552161056564233
oct2317242513635035
9362534362801118
1084615506115101
1124a6326430a065
1295a70759636a5
13382a291c4a790
1416c75ab6a6953
159bb09bbeb21b
hex4cf5152f3a1d

84615506115101 has 16 divisors (see below), whose sum is σ = 96489824599728. Its totient is φ = 73508170982400.

The previous prime is 84615506115079. The next prime is 84615506115103. The reversal of 84615506115101 is 10151160551648.

It can be written as a sum of positive squares in 8 ways, for example, as 9579804955876 + 75035701159225 = 3095126^2 + 8662315^2 .

It is a cyclic number.

It is not a de Polignac number, because 84615506115101 - 26 = 84615506115037 is a prime.

It is a super-2 number, since 2×846155061151012 (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84615506115103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6134630 + ... + 14382791.

It is an arithmetic number, because the mean of its divisors is an integer number (6030614037483).

Almost surely, 284615506115101 is an apocalyptic number.

It is an amenable number.

84615506115101 is a deficient number, since it is larger than the sum of its proper divisors (11874318484627).

84615506115101 is a wasteful number, since it uses less digits than its factorization.

84615506115101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20536112.

The product of its (nonzero) digits is 144000, while the sum is 44.

Adding to 84615506115101 its reverse (10151160551648), we get a palindrome (94766666666749).

The spelling of 84615506115101 in words is "eighty-four trillion, six hundred fifteen billion, five hundred six million, one hundred fifteen thousand, one hundred one".

Divisors: 1 13 17 221 18661 242593 317237 4124081 20517421 266726473 348796157 4534350041 382875593281 4977382712653 6508885085777 84615506115101