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79811475911877 = 397274266240247
BaseRepresentation
bin10010001001011010001110…
…101010111011010011000101
3101110120220100222112001201210
4102021122032222323103011
540430112400313140002
6441424515203042033
722545121526606343
oct2211321652732305
9343526328461653
1079811475911877
1123480947520436
128b4bbb9970319
13356c26123a658
14159cc78a68993
1593612dc0e96c
hex48968eabb4c5

79811475911877 has 8 divisors (see below), whose sum is σ = 107512366177216. Its totient is φ = 52659118127232.

The previous prime is 79811475911803. The next prime is 79811475911963. The reversal of 79811475911877 is 77811957411897.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 79811475911877 - 211 = 79811475909829 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 79811475911799 and 79811475911808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79811475911177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 137133119833 + ... + 137133120414.

It is an arithmetic number, because the mean of its divisors is an integer number (13439045772152).

Almost surely, 279811475911877 is an apocalyptic number.

It is an amenable number.

79811475911877 is a deficient number, since it is larger than the sum of its proper divisors (27700890265339).

79811475911877 is a wasteful number, since it uses less digits than its factorization.

79811475911877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274266240347.

The product of its digits is 248935680, while the sum is 75.

The spelling of 79811475911877 in words is "seventy-nine trillion, eight hundred eleven billion, four hundred seventy-five million, nine hundred eleven thousand, eight hundred seventy-seven".

Divisors: 1 3 97 291 274266240247 822798720741 26603825303959 79811475911877