27221479464 has 32 divisors (see below), whose sum is σ = 68141783520. Its totient is φ = 9062081856.

The previous prime is 27221479433. The next prime is 27221479487. The reversal of 27221479464 is 46497412272.

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, 715102 + ... + 752205.

It is an arithmetic number, because the mean of its divisors is an integer number (2129430735).

Almost surely, 2^27221479464 is an apocalyptic number.

27221479464 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

27221479464 is an abundant number, since it is smaller than the sum of its proper divisors (40920304056).

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

27221479464 is a wasteful number, since it uses less digits than its factorization.

27221479464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1468089 (or 1468085 counting only the distinct ones).

The product of its digits is 1354752, while the sum is 48.

The spelling of 27221479464 in words is "twenty-seven billion, two hundred twenty-one million, four hundred seventy-nine thousand, four hundred sixty-four".