1138756833444 has 48 divisors (see below), whose sum is σ = 2664019108800. Its totient is φ = 378597703680.

The previous prime is 1138756833443. The next prime is 1138756833481. The reversal of 1138756833444 is 4443386578311.

It is a super-2 number, since 2×1138756833444² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1138756833443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14794779 + ... + 14871549.

It is an arithmetic number, because the mean of its divisors is an integer number (55500398100).

Almost surely, 2^{1138756833444} is an apocalyptic number.

It is an amenable number.

1138756833444 is an abundant number, since it is smaller than the sum of its proper divisors (1525262275356).

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

1138756833444 is a wasteful number, since it uses less digits than its factorization.

1138756833444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79980 (or 79978 counting only the distinct ones).

The product of its digits is 23224320, while the sum is 57.

The spelling of 1138756833444 in words is "one trillion, one hundred thirty-eight billion, seven hundred fifty-six million, eight hundred thirty-three thousand, four hundred forty-four".