21552006755474 has 32 divisors (see below), whose sum is σ = 34834138698240. Its totient is φ = 9941550435072.

The previous prime is 21552006755467. The next prime is 21552006755491. The reversal of 21552006755474 is 47455760025512.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 432546527 + ... + 432596349.

It is an arithmetic number, because the mean of its divisors is an integer number (1088566834320).

Almost surely, 2^{21552006755474} is an apocalyptic number.

21552006755474 is a deficient number, since it is larger than the sum of its proper divisors (13282131942766).

21552006755474 is a wasteful number, since it uses less digits than its factorization.

21552006755474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58754.

The product of its (nonzero) digits is 11760000, while the sum is 53.

The spelling of 21552006755474 in words is "twenty-one trillion, five hundred fifty-two billion, six million, seven hundred fifty-five thousand, four hundred seventy-four".