13513555113444 has 18 divisors (see below), whose sum is σ = 34159264314630. Its totient is φ = 4504518371136.

The previous prime is 13513555113439. The next prime is 13513555113451. The reversal of 13513555113444 is 44431155531531.

13513555113444 is a `hidden beast` number, since 1 + 3 + 5 + 13 + 55 + 511 + 34 + 44 = 666.

It can be written as a sum of positive squares in only one way, i.e., 11813738900544 + 1699816212900 = 3437112^2 + 1303770^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×13513555113444² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13513555113444.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 187688265429 + ... + 187688265500.

Almost surely, 2^{13513555113444} is an apocalyptic number.

It is an amenable number.

13513555113444 is an abundant number, since it is smaller than the sum of its proper divisors (20645709201186).

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

13513555113444 is a wasteful number, since it uses less digits than its factorization.

13513555113444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375376530939 (or 375376530934 counting only the distinct ones).

The product of its digits is 1080000, while the sum is 45.

The spelling of 13513555113444 in words is "thirteen trillion, five hundred thirteen billion, five hundred fifty-five million, one hundred thirteen thousand, four hundred forty-four".