13538156468512 has 48 divisors (see below), whose sum is σ = 28703840651640. Its totient is φ = 6248304709632.

The previous prime is 13538156468491. The next prime is 13538156468533. The reversal of 13538156468512 is 21586465183531.

It is an interprime number because it is at equal distance from previous prime (13538156468491) and next prime (13538156468533).

It can be written as a sum of positive squares in 4 ways, for example, as 11594597047056 + 1943559421456 = 3405084^2 + 1394116^2 .

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, 49631314 + ... + 49903342.

Almost surely, 2^{13538156468512} is an apocalyptic number.

It is an amenable number.

13538156468512 is an abundant number, since it is smaller than the sum of its proper divisors (15165684183128).

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

13538156468512 is a wasteful number, since it uses less digits than its factorization.

13538156468512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391685 (or 391677 counting only the distinct ones).

The product of its digits is 20736000, while the sum is 58.

The spelling of 13538156468512 in words is "thirteen trillion, five hundred thirty-eight billion, one hundred fifty-six million, four hundred sixty-eight thousand, five hundred twelve".