21604073174374 has 24 divisors (see below), whose sum is σ = 33266702823480. Its totient is φ = 10521977975808.

The previous prime is 21604073174329. The next prime is 21604073174417. The reversal of 21604073174374 is 47347137040612.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13051867 + ... + 14613670.

It is an arithmetic number, because the mean of its divisors is an integer number (1386112617645).

Almost surely, 2^{21604073174374} is an apocalyptic number.

21604073174374 is a deficient number, since it is larger than the sum of its proper divisors (11662629649106).

21604073174374 is a wasteful number, since it uses less digits than its factorization.

21604073174374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27665784 (or 27665731 counting only the distinct ones).

The product of its (nonzero) digits is 2370816, while the sum is 49.

The spelling of 21604073174374 in words is "twenty-one trillion, six hundred four billion, seventy-three million, one hundred seventy-four thousand, three hundred seventy-four".