27222329664 has 98 divisors (see below), whose sum is σ = 80992054170. Its totient is φ = 9074094336.

The previous prime is 27222329657. The next prime is 27222329681. The reversal of 27222329664 is 46692322272.

27222329664 is a `hidden beast` number, since 272 + 2 + 232 + 96 + 64 = 666.

It can be written as a sum of positive squares in only one way, i.e., 21892161600 + 5330168064 = 147960^2 + 73008^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 245079 + ... + 338390.

Almost surely, 2^27222329664 is an apocalyptic number.

27222329664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

27222329664 is an abundant number, since it is smaller than the sum of its proper divisors (53769724506).

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

27222329664 is an frugal number, since it uses more digits than its factorization.

27222329664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 583499 (or 583474 counting only the distinct ones).

The product of its digits is 870912, while the sum is 45.

The spelling of 27222329664 in words is "twenty-seven billion, two hundred twenty-two million, three hundred twenty-nine thousand, six hundred sixty-four".