72457847284 has 6 divisors (see below), whose sum is σ = 126801232754. Its totient is φ = 36228923640.

The previous prime is 72457847279. The next prime is 72457847291. The reversal of 72457847284 is 48274875427.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 62714183184 + 9743664100 = 250428^2 + 98710^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9057230907 + ... + 9057230914.

Almost surely, 2^72457847284 is an apocalyptic number.

It is an amenable number.

72457847284 is a deficient number, since it is larger than the sum of its proper divisors (54343385470).

72457847284 is a wasteful number, since it uses less digits than its factorization.

72457847284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18114461825 (or 18114461823 counting only the distinct ones).

The product of its digits is 28098560, while the sum is 58.

The spelling of 72457847284 in words is "seventy-two billion, four hundred fifty-seven million, eight hundred forty-seven thousand, two hundred eighty-four".