21052957596 has 48 divisors (see below), whose sum is σ = 54729561600. Its totient is φ = 6243944320.

The previous prime is 21052957579. The next prime is 21052957613. The reversal of 21052957596 is 69575925012.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (21052957579) and next prime (21052957613).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1690521 + ... + 1702928.

It is an arithmetic number, because the mean of its divisors is an integer number (1140199200).

Almost surely, 2^21052957596 is an apocalyptic number.

It is an amenable number.

21052957596 is an abundant number, since it is smaller than the sum of its proper divisors (33676604004).

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

21052957596 is a wasteful number, since it uses less digits than its factorization.

21052957596 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3393514 (or 3393512 counting only the distinct ones).

The product of its (nonzero) digits is 1701000, while the sum is 51.

The spelling of 21052957596 in words is "twenty-one billion, fifty-two million, nine hundred fifty-seven thousand, five hundred ninety-six".