72465026640 has 40 divisors (see below), whose sum is σ = 224641583328. Its totient is φ = 19324007040.

The previous prime is 72465026639. The next prime is 72465026651. The reversal of 72465026640 is 4662056427.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 72465026592 and 72465026601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 150968566 + ... + 150969045.

Almost surely, 2^72465026640 is an apocalyptic number.

It is an amenable number.

72465026640 is an abundant number, since it is smaller than the sum of its proper divisors (152176556688).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72465026640 is a wasteful number, since it uses less digits than its factorization.

72465026640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301937627 (or 301937621 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 42.

The spelling of 72465026640 in words is "seventy-two billion, four hundred sixty-five million, twenty-six thousand, six hundred forty".