13761388044 has 18 divisors (see below), whose sum is σ = 34785730980. Its totient is φ = 4587129336.

The previous prime is 13761388019. The next prime is 13761388061. The reversal of 13761388044 is 44088316731.

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

It is a super-2 number, since 2×13761388044² (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 5 ways as a sum of consecutive naturals, for example, 191130354 + ... + 191130425.

It is an arithmetic number, because the mean of its divisors is an integer number (1932540610).

Almost surely, 2^13761388044 is an apocalyptic number.

It is an amenable number.

13761388044 is an abundant number, since it is smaller than the sum of its proper divisors (21024342936).

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

13761388044 is a wasteful number, since it uses less digits than its factorization.

13761388044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382260789 (or 382260784 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The spelling of 13761388044 in words is "thirteen billion, seven hundred sixty-one million, three hundred eighty-eight thousand, forty-four".