52790251638 has 16 divisors (see below), whose sum is σ = 105797306880. Its totient is φ = 17560616616.

The previous prime is 52790251627. The next prime is 52790251687. The reversal of 52790251638 is 83615209725.

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, 9030318 + ... + 9036161.

It is an arithmetic number, because the mean of its divisors is an integer number (6612331680).

Almost surely, 2^52790251638 is an apocalyptic number.

52790251638 is an abundant number, since it is smaller than the sum of its proper divisors (53007055242).

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

52790251638 is a wasteful number, since it uses less digits than its factorization.

52790251638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18066971.

The product of its (nonzero) digits is 907200, while the sum is 48.

The spelling of 52790251638 in words is "fifty-two billion, seven hundred ninety million, two hundred fifty-one thousand, six hundred thirty-eight".