27325552644 has 72 divisors (see below), whose sum is σ = 76951307160. Its totient is φ = 8117932032.

The previous prime is 27325552643. The next prime is 27325552651. The reversal of 27325552644 is 44625552372.

27325552644 is a `hidden beast` number, since 2 + 7 + 32 + 5 + 552 + 64 + 4 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 2754990144 + 24570562500 = 52488^2 + 156750^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 27325552644.

It is not an unprimeable number, because it can be changed into a prime (27325552643) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 993117 + ... + 1020260.

It is an arithmetic number, because the mean of its divisors is an integer number (1068768155).

Almost surely, 2^27325552644 is an apocalyptic number.

It is an amenable number.

27325552644 is an abundant number, since it is smaller than the sum of its proper divisors (49625754516).

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

27325552644 is a wasteful number, since it uses less digits than its factorization.

27325552644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2013429 (or 2013424 counting only the distinct ones).

The product of its digits is 2016000, while the sum is 45.

The spelling of 27325552644 in words is "twenty-seven billion, three hundred twenty-five million, five hundred fifty-two thousand, six hundred forty-four".