21150367974 has 40 divisors (see below), whose sum is σ = 47811935160. Its totient is φ = 6987726144.

The previous prime is 21150367949. The next prime is 21150367999. The reversal of 21150367974 is 47976305112.

21150367974 is a `hidden beast` number, since 2 + 1 + 1 + 503 + 6 + 79 + 74 = 666.

It is an interprime number because it is at equal distance from previous prime (21150367949) and next prime (21150367999).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 559384 + ... + 595995.

It is an arithmetic number, because the mean of its divisors is an integer number (1195298379).

Almost surely, 2^21150367974 is an apocalyptic number.

21150367974 is an abundant number, since it is smaller than the sum of its proper divisors (26661567186).

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

21150367974 is a wasteful number, since it uses less digits than its factorization.

21150367974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1155506 (or 1155497 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 45.

The spelling of 21150367974 in words is "twenty-one billion, one hundred fifty million, three hundred sixty-seven thousand, nine hundred seventy-four".