72758658969 has 20 divisors (see below), whose sum is σ = 109704657744. Its totient is φ = 48052441944.

The previous prime is 72758658949. The next prime is 72758659009. The reversal of 72758658969 is 96985685727.

It is not a de Polignac number, because 72758658969 - 2²¹ = 72756561817 is a prime.

It is a super-2 number, since 2×72758658969² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 72758658897 and 72758658906.

It is not an unprimeable number, because it can be changed into a prime (72758658949) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4188787 + ... + 4206120.

Almost surely, 2^72758658969 is an apocalyptic number.

It is an amenable number.

72758658969 is a deficient number, since it is larger than the sum of its proper divisors (36945998775).

72758658969 is a wasteful number, since it uses less digits than its factorization.

72758658969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8395026 (or 8395017 counting only the distinct ones).

The product of its digits is 457228800, while the sum is 72.

The spelling of 72758658969 in words is "seventy-two billion, seven hundred fifty-eight million, six hundred fifty-eight thousand, nine hundred sixty-nine".