27952193864 has 48 divisors (see below), whose sum is σ = 60983829180. Its totient is φ = 11976236160.

The previous prime is 27952193839. The next prime is 27952193897. The reversal of 27952193864 is 46839125972.

It can be written as a sum of positive squares in 2 ways, for example, as 21465180100 + 6487013764 = 146510^2 + 80542^2 .

It is a Harshad number since it is a multiple of its sum of digits (56).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1904474 + ... + 1919094.

Almost surely, 2^27952193864 is an apocalyptic number.

It is an amenable number.

27952193864 is an abundant number, since it is smaller than the sum of its proper divisors (33031635316).

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

27952193864 is a wasteful number, since it uses less digits than its factorization.

27952193864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19518 (or 19507 counting only the distinct ones).

The product of its digits is 6531840, while the sum is 56.

The spelling of 27952193864 in words is "twenty-seven billion, nine hundred fifty-two million, one hundred ninety-three thousand, eight hundred sixty-four".