72481235864 has 32 divisors (see below), whose sum is σ = 139018375440. Its totient is φ = 35415120000.

The previous prime is 72481235833. The next prime is 72481235923. The reversal of 72481235864 is 46853218427.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 234107 + ... + 446954.

Almost surely, 2^72481235864 is an apocalyptic number.

It is an amenable number.

72481235864 is a deficient number, since it is larger than the sum of its proper divisors (66537139576).

72481235864 is a wasteful number, since it uses less digits than its factorization.

72481235864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 681371 (or 681367 counting only the distinct ones).

The product of its digits is 2580480, while the sum is 50.

The spelling of 72481235864 in words is "seventy-two billion, four hundred eighty-one million, two hundred thirty-five thousand, eight hundred sixty-four".