13235897156 has 36 divisors (see below), whose sum is σ = 23619760668. Its totient is φ = 6488884224.

The previous prime is 13235897137. The next prime is 13235897161. The reversal of 13235897156 is 65179853231.

It can be written as a sum of positive squares in 2 ways, for example, as 6861471556 + 6374425600 = 82834^2 + 79840^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26524595 + ... + 26525093.

It is an arithmetic number, because the mean of its divisors is an integer number (656104463).

Almost surely, 2^13235897156 is an apocalyptic number.

It is an amenable number.

13235897156 is a deficient number, since it is larger than the sum of its proper divisors (10383863512).

13235897156 is an equidigital number, since it uses as much as digits as its factorization.

13235897156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1236 (or 735 counting only the distinct ones).

The product of its digits is 1360800, while the sum is 50.

The spelling of 13235897156 in words is "thirteen billion, two hundred thirty-five million, eight hundred ninety-seven thousand, one hundred fifty-six".