21464260424 has 16 divisors (see below), whose sum is σ = 41101776000. Its totient is φ = 10503786832.

The previous prime is 21464260403. The next prime is 21464260451. The reversal of 21464260424 is 42406246412.

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, 28542524 + ... + 28543275.

It is an arithmetic number, because the mean of its divisors is an integer number (2568861000).

Almost surely, 2^21464260424 is an apocalyptic number.

It is an amenable number.

21464260424 is a deficient number, since it is larger than the sum of its proper divisors (19637515576).

21464260424 is a wasteful number, since it uses less digits than its factorization.

21464260424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57085852 (or 57085848 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 35.

The spelling of 21464260424 in words is "twenty-one billion, four hundred sixty-four million, two hundred sixty thousand, four hundred twenty-four".