72617695437 has 16 divisors (see below), whose sum is σ = 110704376960. Its totient is φ = 41477510592.

The previous prime is 72617695421. The next prime is 72617695463. The reversal of 72617695437 is 73459671627.

It is not a de Polignac number, because 72617695437 - 2⁴ = 72617695421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72617695537) 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, 714358 + ... + 809655.

It is an arithmetic number, because the mean of its divisors is an integer number (6919023560).

Almost surely, 2^72617695437 is an apocalyptic number.

It is an amenable number.

72617695437 is a deficient number, since it is larger than the sum of its proper divisors (38086681523).

72617695437 is a wasteful number, since it uses less digits than its factorization.

72617695437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1526292.

The product of its digits is 13335840, while the sum is 57.

The spelling of 72617695437 in words is "seventy-two billion, six hundred seventeen million, six hundred ninety-five thousand, four hundred thirty-seven".