21250374884 has 24 divisors (see below), whose sum is σ = 40645882368. Its totient is φ = 9677589120.

The previous prime is 21250374881. The next prime is 21250374941. The reversal of 21250374884 is 48847305212.

It is not an unprimeable number, because it can be changed into a prime (21250374881) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5038304 + ... + 5042519.

It is an arithmetic number, because the mean of its divisors is an integer number (1693578432).

Almost surely, 2^21250374884 is an apocalyptic number.

It is an amenable number.

21250374884 is a deficient number, since it is larger than the sum of its proper divisors (19395507484).

21250374884 is a wasteful number, since it uses less digits than its factorization.

21250374884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10080875 (or 10080873 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 44.

The spelling of 21250374884 in words is "twenty-one billion, two hundred fifty million, three hundred seventy-four thousand, eight hundred eighty-four".