13511665452 has 24 divisors (see below), whose sum is σ = 32122074096. Its totient is φ = 4418909248.

The previous prime is 13511665441. The next prime is 13511665463. The reversal of 13511665452 is 25456611531.

It is an interprime number because it is at equal distance from previous prime (13511665441) and next prime (13511665463).

It is a self number, because there is not a number n which added to its sum of digits gives 13511665452.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10621743 + ... + 10623014.

It is an arithmetic number, because the mean of its divisors is an integer number (1338419754).

Almost surely, 2^13511665452 is an apocalyptic number.

13511665452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13511665452 is an abundant number, since it is smaller than the sum of its proper divisors (18610408644).

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

13511665452 is a wasteful number, since it uses less digits than its factorization.

13511665452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21244817 (or 21244815 counting only the distinct ones).

The product of its digits is 108000, while the sum is 39.

The spelling of 13511665452 in words is "thirteen billion, five hundred eleven million, six hundred sixty-five thousand, four hundred fifty-two".