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212051130451 = 8315716272821
BaseRepresentation
bin1100010101111100111…
…0110111100001010011
3202021100012121112122021
43011133032313201103
511433240042133301
6241225343352311
721214552604056
oct3053716674123
9667305545567
10212051130451
1181a26375946
123511b5b2697
1316cc4c467b4
14a39880ca9d
1557b14448a1
hex315f3b7853

212051130451 has 8 divisors (see below), whose sum is σ = 215972893584. Its totient is φ = 208161913440.

The previous prime is 212051130407. The next prime is 212051130461. The reversal of 212051130451 is 154031150212.

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

It is a cyclic number.

It is not a de Polignac number, because 212051130451 - 27 = 212051130323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212051130461) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8123380 + ... + 8149441.

It is an arithmetic number, because the mean of its divisors is an integer number (26996611698).

Almost surely, 2212051130451 is an apocalyptic number.

212051130451 is a deficient number, since it is larger than the sum of its proper divisors (3921763133).

212051130451 is a wasteful number, since it uses less digits than its factorization.

212051130451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16273061.

The product of its (nonzero) digits is 1200, while the sum is 25.

Adding to 212051130451 its reverse (154031150212), we get a palindrome (366082280663).

The spelling of 212051130451 in words is "two hundred twelve billion, fifty-one million, one hundred thirty thousand, four hundred fifty-one".

Divisors: 1 83 157 13031 16272821 1350644143 2554832897 212051130451