72604461831 has 16 divisors (see below), whose sum is σ = 105623326080. Its totient is φ = 43995689120.

The previous prime is 72604461827. The next prime is 72604461847. The reversal of 72604461831 is 13816440627.

It is a cyclic number.

It is not a de Polignac number, because 72604461831 - 2² = 72604461827 is a prime.

It is a super-2 number, since 2×72604461831² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72604461821) 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, 38656 + ... + 383018.

It is an arithmetic number, because the mean of its divisors is an integer number (6601457880).

Almost surely, 2^72604461831 is an apocalyptic number.

72604461831 is a deficient number, since it is larger than the sum of its proper divisors (33018864249).

72604461831 is a wasteful number, since it uses less digits than its factorization.

72604461831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350766.

The product of its (nonzero) digits is 193536, while the sum is 42.

It can be divided in two parts, 72604 and 461831, that added together give a palindrome (534435).

The spelling of 72604461831 in words is "seventy-two billion, six hundred four million, four hundred sixty-one thousand, eight hundred thirty-one".