27387602064 has 75 divisors (see below), whose sum is σ = 79284913257. Its totient is φ = 9127214784.

The previous prime is 27387602051. The next prime is 27387602101. The reversal of 27387602064 is 46020678372.

The square root of 27387602064 is 165492.

It is a perfect power (a square), and thus also a powerful number.

27387602064 is a `hidden beast` number, since 2 + 7 + 38 + 7 + 602 + 0 + 6 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1976691600 + 25410910464 = 44460^2 + 159408^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 5955414 + ... + 5960010.

Almost surely, 2^27387602064 is an apocalyptic number.

27387602064 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

27387602064 is the 165492-nd square number.

It is an amenable number.

27387602064 is an abundant number, since it is smaller than the sum of its proper divisors (51897311193).

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

27387602064 is an frugal number, since it uses more digits than its factorization.

27387602064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9214 (or 4602 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 45.

The spelling of 27387602064 in words is "twenty-seven billion, three hundred eighty-seven million, six hundred two thousand, sixty-four".