253161727556 has 12 divisors (see below), whose sum is σ = 443039870700. Its totient is φ = 126578907360.

The previous prime is 253161727543. The next prime is 253161727573. The reversal of 253161727556 is 655727161352.

It can be written as a sum of positive squares in 2 ways, for example, as 20258967556 + 232902760000 = 142334^2 + 482600^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 175631 + ... + 732918.

It is an arithmetic number, because the mean of its divisors is an integer number (36919989225).

Almost surely, 2^253161727556 is an apocalyptic number.

It is an amenable number.

253161727556 is a deficient number, since it is larger than the sum of its proper divisors (189878143144).

253161727556 is a wasteful number, since it uses less digits than its factorization.

253161727556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 978214 (or 978212 counting only the distinct ones).

The product of its digits is 2646000, while the sum is 50.

The spelling of 253161727556 in words is "two hundred fifty-three billion, one hundred sixty-one million, seven hundred twenty-seven thousand, five hundred fifty-six".