27729327464 has 16 divisors (see below), whose sum is σ = 51995597220. Its totient is φ = 13863834880.

The previous prime is 27729327463. The next prime is 27729327517. The reversal of 27729327464 is 46472392772.

It can be written as a sum of positive squares in 2 ways, for example, as 25517506564 + 2211820900 = 159742^2 + 47030^2 .

It is not an unprimeable number, because it can be changed into a prime (27729327463) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52394 + ... + 241254.

Almost surely, 2^27729327464 is an apocalyptic number.

It is an amenable number.

27729327464 is a deficient number, since it is larger than the sum of its proper divisors (24266269756).

27729327464 is a wasteful number, since it uses less digits than its factorization.

27729327464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207220 (or 207216 counting only the distinct ones).

The product of its digits is 7112448, while the sum is 53.

The spelling of 27729327464 in words is "twenty-seven billion, seven hundred twenty-nine million, three hundred twenty-seven thousand, four hundred sixty-four".