21263154054224 has 40 divisors (see below), whose sum is σ = 41812848657600. Its totient is φ = 10472746065408.

The previous prime is 21263154054209. The next prime is 21263154054251. The reversal of 21263154054224 is 42245045136212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128163677 + ... + 128329475.

It is an arithmetic number, because the mean of its divisors is an integer number (1045321216440).

Almost surely, 2^{21263154054224} is an apocalyptic number.

It is an amenable number.

21263154054224 is a deficient number, since it is larger than the sum of its proper divisors (20549694603376).

21263154054224 is a wasteful number, since it uses less digits than its factorization.

21263154054224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285507 (or 285501 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 41.

The spelling of 21263154054224 in words is "twenty-one trillion, two hundred sixty-three billion, one hundred fifty-four million, fifty-four thousand, two hundred twenty-four".