21029725594752 has 256 divisors, whose sum is σ = 68764807249920. Its totient is φ = 5561858396160.

The previous prime is 21029725594741. The next prime is 21029725594771. The reversal of 21029725594752 is 25749552792012.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3569823 + ... + 7402910.

It is an arithmetic number, because the mean of its divisors is an integer number (268612528320).

Almost surely, 2^{21029725594752} is an apocalyptic number.

It is an amenable number.

21029725594752 is an abundant number, since it is smaller than the sum of its proper divisors (47735081655168).

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

21029725594752 is a wasteful number, since it uses less digits than its factorization.

21029725594752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10972811 (or 10972799 counting only the distinct ones).

The product of its (nonzero) digits is 31752000, while the sum is 60.

The spelling of 21029725594752 in words is "twenty-one trillion, twenty-nine billion, seven hundred twenty-five million, five hundred ninety-four thousand, seven hundred fifty-two".