13565161804 has 6 divisors (see below), whose sum is σ = 23739033164. Its totient is φ = 6782580900.

The previous prime is 13565161801. The next prime is 13565161837. The reversal of 13565161804 is 40816156531.

It is a super-2 number, since 2×13565161804² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13565161801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1695645222 + ... + 1695645229.

Almost surely, 2^13565161804 is an apocalyptic number.

It is an amenable number.

13565161804 is a deficient number, since it is larger than the sum of its proper divisors (10173871360).

13565161804 is a wasteful number, since it uses less digits than its factorization.

13565161804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3391290455 (or 3391290453 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 40.

The spelling of 13565161804 in words is "thirteen billion, five hundred sixty-five million, one hundred sixty-one thousand, eight hundred four".