13137798444 has 48 divisors (see below), whose sum is σ = 33671258880. Its totient is φ = 3968395200.

The previous prime is 13137798409. The next prime is 13137798451. The reversal of 13137798444 is 44489773131.

It is a super-2 number, since 2×13137798444² (a number of 21 digits) contains 22 as substring.

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, 1247407 + ... + 1257894.

It is an arithmetic number, because the mean of its divisors is an integer number (701484560).

Almost surely, 2^13137798444 is an apocalyptic number.

It is an amenable number.

13137798444 is an abundant number, since it is smaller than the sum of its proper divisors (20533460436).

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

13137798444 is a wasteful number, since it uses less digits than its factorization.

13137798444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2505350 (or 2505348 counting only the distinct ones).

The product of its digits is 2032128, while the sum is 51.

The spelling of 13137798444 in words is "thirteen billion, one hundred thirty-seven million, seven hundred ninety-eight thousand, four hundred forty-four".