21304610250 has 128 divisors (see below), whose sum is σ = 66297913344. Its totient is φ = 4426920000.

The previous prime is 21304610237. The next prime is 21304610291. The reversal of 21304610250 is 5201640312.

It is a self number, because there is not a number n which added to its sum of digits gives 21304610250.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 126706 + ... + 242205.

It is an arithmetic number, because the mean of its divisors is an integer number (517952448).

Almost surely, 2^21304610250 is an apocalyptic number.

21304610250 is an abundant number, since it is smaller than the sum of its proper divisors (44993303094).

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

21304610250 is a wasteful number, since it uses less digits than its factorization.

21304610250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368949 (or 368939 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The spelling of 21304610250 in words is "twenty-one billion, three hundred four million, six hundred ten thousand, two hundred fifty".