13315775236 has 9 divisors (see below), whose sum is σ = 23303010549. Its totient is φ = 6657772224.

The previous prime is 13315775233. The next prime is 13315775257. The reversal of 13315775236 is 63257751331.

The square root of 13315775236 is 115394.

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

It can be written as a sum of positive squares in only one way, i.e., 12789348100 + 526427136 = 113090^2 + 22944^2 .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13315775192 and 13315775201.

It is not an unprimeable number, because it can be changed into a prime (13315775233) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 201940 + ... + 259636.

Almost surely, 2^13315775236 is an apocalyptic number.

13315775236 is the 115394-th square number.

It is an amenable number.

13315775236 is a deficient number, since it is larger than the sum of its proper divisors (9987235313).

13315775236 is an frugal number, since it uses more digits than its factorization.

13315775236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115398 (or 57699 counting only the distinct ones).

The product of its digits is 396900, while the sum is 43.

The spelling of 13315775236 in words is "thirteen billion, three hundred fifteen million, seven hundred seventy-five thousand, two hundred thirty-six".