21601384841274 has 64 divisors (see below), whose sum is σ = 51973936450560. Its totient is φ = 5846914920960.

The previous prime is 21601384841263. The next prime is 21601384841287. The reversal of 21601384841274 is 47214848310612.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 89040202 + ... + 89282474.

It is an arithmetic number, because the mean of its divisors is an integer number (812092757040).

Almost surely, 2^{21601384841274} is an apocalyptic number.

21601384841274 is an abundant number, since it is smaller than the sum of its proper divisors (30372551609286).

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

21601384841274 is a wasteful number, since it uses less digits than its factorization.

21601384841274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354035.

The product of its (nonzero) digits is 2064384, while the sum is 51.

The spelling of 21601384841274 in words is "twenty-one trillion, six hundred one billion, three hundred eighty-four million, eight hundred forty-one thousand, two hundred seventy-four".