72704344818 has 32 divisors (see below), whose sum is σ = 166194829440. Its totient is φ = 20770986240.

The previous prime is 72704344799. The next prime is 72704344837. The reversal of 72704344818 is 81844340727.

It is an interprime number because it is at equal distance from previous prime (72704344799) and next prime (72704344837).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 510778 + ... + 637418.

It is an arithmetic number, because the mean of its divisors is an integer number (5193588420).

Almost surely, 2^72704344818 is an apocalyptic number.

72704344818 is an abundant number, since it is smaller than the sum of its proper divisors (93490484622).

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

72704344818 is a wasteful number, since it uses less digits than its factorization.

72704344818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140322.

The product of its (nonzero) digits is 1204224, while the sum is 48.

The spelling of 72704344818 in words is "seventy-two billion, seven hundred four million, three hundred forty-four thousand, eight hundred eighteen".