126915793272 has 64 divisors (see below), whose sum is σ = 353747268000. Its totient is φ = 42160856832.

The previous prime is 126915793271. The next prime is 126915793307. The reversal of 126915793272 is 272397519621.

126915793272 is a `hidden beast` number, since 1 + 2 + 69 + 1 + 579 + 3 + 2 + 7 + 2 = 666.

It is a super-2 number, since 2×126915793272² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126915793271) 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, 939397 + ... + 1065972.

Almost surely, 2^126915793272 is an apocalyptic number.

126915793272 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

126915793272 is an abundant number, since it is smaller than the sum of its proper divisors (226831474728).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

126915793272 is a wasteful number, since it uses less digits than its factorization.

126915793272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2005677 (or 2005667 counting only the distinct ones).

The product of its digits is 2857680, while the sum is 54.

The spelling of 126915793272 in words is "one hundred twenty-six billion, nine hundred fifteen million, seven hundred ninety-three thousand, two hundred seventy-two".