72821525264 has 40 divisors (see below), whose sum is σ = 148543930080. Its totient is φ = 34488288000.

The previous prime is 72821525237. The next prime is 72821525303. The reversal of 72821525264 is 46252512827.

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, 2016164 + ... + 2051964.

It is an arithmetic number, because the mean of its divisors is an integer number (3713598252).

Almost surely, 2^72821525264 is an apocalyptic number.

It is an amenable number.

72821525264 is an abundant number, since it is smaller than the sum of its proper divisors (75722404816).

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

72821525264 is a wasteful number, since it uses less digits than its factorization.

72821525264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42519 (or 42513 counting only the distinct ones).

The product of its digits is 537600, while the sum is 44.

The spelling of 72821525264 in words is "seventy-two billion, eight hundred twenty-one million, five hundred twenty-five thousand, two hundred sixty-four".