15513233162772 has 12 divisors (see below), whose sum is σ = 36197544046496. Its totient is φ = 5171077720920.

The previous prime is 15513233162767. The next prime is 15513233162873. The reversal of 15513233162772 is 27726133231551.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 646384715104 + ... + 646384715127.

Almost surely, 2^{15513233162772} is an apocalyptic number.

15513233162772 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

15513233162772 is an abundant number, since it is smaller than the sum of its proper divisors (20684310883724).

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

15513233162772 is a wasteful number, since it uses less digits than its factorization.

15513233162772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1292769430238 (or 1292769430236 counting only the distinct ones).

The product of its digits is 1587600, while the sum is 48.

The spelling of 15513233162772 in words is "fifteen trillion, five hundred thirteen billion, two hundred thirty-three million, one hundred sixty-two thousand, seven hundred seventy-two".