27964812552664 has 32 divisors (see below), whose sum is σ = 56468179368720. Its totient is φ = 12906660698496.

The previous prime is 27964812552653. The next prime is 27964812552709. The reversal of 27964812552664 is 46625521846972.

It is a happy number.

It is a super-2 number, since 2×27964812552664² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 27964812552664.

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, 5997534 + ... + 9586450.

Almost surely, 2^{27964812552664} is an apocalyptic number.

It is an amenable number.

27964812552664 is an abundant number, since it is smaller than the sum of its proper divisors (28503366816056).

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

27964812552664 is a wasteful number, since it uses less digits than its factorization.

27964812552664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3663859 (or 3663855 counting only the distinct ones).

The product of its digits is 348364800, while the sum is 67.

The spelling of 27964812552664 in words is "twenty-seven trillion, nine hundred sixty-four billion, eight hundred twelve million, five hundred fifty-two thousand, six hundred sixty-four".