72463478040 has 80 divisors (see below), whose sum is σ = 243557812080. Its totient is φ = 19323593280.

The previous prime is 72463478029. The next prime is 72463478053. The reversal of 72463478040 is 4087436427.

72463478040 is a `hidden beast` number, since 7 + 2 + 4 + 634 + 7 + 8 + 0 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 11179396 + ... + 11185875.

It is an arithmetic number, because the mean of its divisors is an integer number (3044472651).

Almost surely, 2^72463478040 is an apocalyptic number.

It is an amenable number.

72463478040 is an abundant number, since it is smaller than the sum of its proper divisors (171094334040).

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

72463478040 is a wasteful number, since it uses less digits than its factorization.

72463478040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22365294 (or 22365281 counting only the distinct ones).

The product of its (nonzero) digits is 903168, while the sum is 45.

The spelling of 72463478040 in words is "seventy-two billion, four hundred sixty-three million, four hundred seventy-eight thousand, forty".