21467274021504 has 48 divisors (see below), whose sum is σ = 61774317174570. Its totient is φ = 7155758006784.

The previous prime is 21467274021467. The next prime is 21467274021517. The reversal of 21467274021504 is 40512047276412.

21467274021504 is a `hidden beast` number, since 2 + 1 + 4 + 6 + 72 + 74 + 0 + 2 + 1 + 504 = 666.

It can be written as a sum of positive squares in only one way, i.e., 19115713111104 + 2351560910400 = 4372152^2 + 1533480^2 .

It is a tau number, because it is divible by the number of its divisors (48).

It is a self number, because there is not a number n which added to its sum of digits gives 21467274021504.

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 5 ways as a sum of consecutive naturals, for example, 9317392087 + ... + 9317394390.

Almost surely, 2^{21467274021504} is an apocalyptic number.

21467274021504 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

21467274021504 is an abundant number, since it is smaller than the sum of its proper divisors (40307043153066).

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

21467274021504 is a wasteful number, since it uses less digits than its factorization.

21467274021504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18634786497 (or 18634786482 counting only the distinct ones).

The product of its (nonzero) digits is 752640, while the sum is 45.

The spelling of 21467274021504 in words is "twenty-one trillion, four hundred sixty-seven billion, two hundred seventy-four million, twenty-one thousand, five hundred four".