21151301305404 has 12 divisors (see below), whose sum is σ = 49353036379304. Its totient is φ = 7050433768464.

The previous prime is 21151301305349. The next prime is 21151301305423. The reversal of 21151301305404 is 40450310315112.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 881304221047 + ... + 881304221070.

Almost surely, 2^{21151301305404} is an apocalyptic number.

It is an amenable number.

21151301305404 is an abundant number, since it is smaller than the sum of its proper divisors (28201735073900).

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

21151301305404 is a wasteful number, since it uses less digits than its factorization.

21151301305404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1762608442124 (or 1762608442122 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

The spelling of 21151301305404 in words is "twenty-one trillion, one hundred fifty-one billion, three hundred one million, three hundred five thousand, four hundred four".