72910969812447 has 64 divisors (see below), whose sum is σ = 114320481408000. Its totient is φ = 40926723683328.

The previous prime is 72910969812431. The next prime is 72910969812467. The reversal of 72910969812447 is 74421896901927.

It is not a de Polignac number, because 72910969812447 - 2⁴ = 72910969812431 is a prime.

It is a super-2 number, since 2×72910969812447² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72910969812467) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2989003 + ... + 12440099.

It is an arithmetic number, because the mean of its divisors is an integer number (1786257522000).

Almost surely, 2^{72910969812447} is an apocalyptic number.

72910969812447 is a deficient number, since it is larger than the sum of its proper divisors (41409511595553).

72910969812447 is a wasteful number, since it uses less digits than its factorization.

72910969812447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9451520.

The product of its (nonzero) digits is 109734912, while the sum is 69.

The spelling of 72910969812447 in words is "seventy-two trillion, nine hundred ten billion, nine hundred sixty-nine million, eight hundred twelve thousand, four hundred forty-seven".