27645047824 has 45 divisors (see below), whose sum is σ = 54091904061. Its totient is φ = 13687181760.

The previous prime is 27645047809. The next prime is 27645047839. The reversal of 27645047824 is 42874054672.

The square root of 27645047824 is 166268.

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

It is an interprime number because it is at equal distance from previous prime (27645047809) and next prime (27645047839).

It can be written as a sum of positive squares in only one way, i.e., 27086576400 + 558471424 = 164580^2 + 23632^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 131019079 + ... + 131019289.

Almost surely, 2^27645047824 is an apocalyptic number.

27645047824 is the 166268-th square number.

It is an amenable number.

27645047824 is a deficient number, since it is larger than the sum of its proper divisors (26446856237).

27645047824 is an frugal number, since it uses more digits than its factorization.

27645047824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 824 (or 410 counting only the distinct ones).

The product of its (nonzero) digits is 3010560, while the sum is 49.

Multiplying 27645047824 by its sum of digits (49), we get a square (1354607343376 = 1163876²).

The spelling of 27645047824 in words is "twenty-seven billion, six hundred forty-five million, forty-seven thousand, eight hundred twenty-four".