21271660058404 has 48 divisors (see below), whose sum is σ = 45299009952000. Its totient is φ = 8720059389888.

The previous prime is 21271660058401. The next prime is 21271660058413. The reversal of 21271660058404 is 40485006617212.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is not an unprimeable number, because it can be changed into a prime (21271660058401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 337014649 + ... + 337077760.

It is an arithmetic number, because the mean of its divisors is an integer number (943729374000).

Almost surely, 2^{21271660058404} is an apocalyptic number.

It is an amenable number.

21271660058404 is an abundant number, since it is smaller than the sum of its proper divisors (24027349893596).

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

21271660058404 is a wasteful number, since it uses less digits than its factorization.

21271660058404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 674092457 (or 674092441 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 46.

The spelling of 21271660058404 in words is "twenty-one trillion, two hundred seventy-one billion, six hundred sixty million, fifty-eight thousand, four hundred four".