13565144561016 has 64 divisors (see below), whose sum is σ = 34488782899200. Its totient is φ = 4444930331648.

The previous prime is 13565144560997. The next prime is 13565144561063. The reversal of 13565144561016 is 61016544156531.

It is a super-2 number, since 2×13565144561016² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48524296 + ... + 48803048.

It is an arithmetic number, because the mean of its divisors is an integer number (538887232800).

Almost surely, 2^{13565144561016} is an apocalyptic number.

It is an amenable number.

13565144561016 is an abundant number, since it is smaller than the sum of its proper divisors (20923638338184).

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

13565144561016 is a wasteful number, since it uses less digits than its factorization.

13565144561016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313188 (or 313184 counting only the distinct ones).

The product of its (nonzero) digits is 1296000, while the sum is 48.

The spelling of 13565144561016 in words is "thirteen trillion, five hundred sixty-five billion, one hundred forty-four million, five hundred sixty-one thousand, sixteen".