235257981156 has 81 divisors (see below), whose sum is σ = 653745372553. Its totient is φ = 71280596640.

The previous prime is 235257981139. The next prime is 235257981197. The reversal of 235257981156 is 651189752532.

The square root of 235257981156 is 485034.

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

235257981156 is a `hidden beast` number, since 2 + 3 + 5 + 2 + 579 + 8 + 11 + 56 = 666.

It can be written as a sum of positive squares in only one way, i.e., 162033621156 + 73224360000 = 402534^2 + 270600^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 32008570 + ... + 32015918.

Almost surely, 2^235257981156 is an apocalyptic number.

235257981156 is the 485034-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 235257981156

235257981156 is an abundant number, since it is smaller than the sum of its proper divisors (418487391397).

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

235257981156 is an equidigital number, since it uses as much as digits as its factorization.

235257981156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14730 (or 7365 counting only the distinct ones).

The product of its digits is 4536000, while the sum is 54.

The spelling of 235257981156 in words is "two hundred thirty-five billion, two hundred fifty-seven million, nine hundred eighty-one thousand, one hundred fifty-six".