1138639574751 has 16 divisors (see below), whose sum is σ = 1735084770048. Its totient is φ = 650645582400.

The previous prime is 1138639574731. The next prime is 1138639574801. The reversal of 1138639574751 is 1574759368311.

It is not a de Polignac number, because 1138639574751 - 2²¹ = 1138637477599 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1138639574701) 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, 4422811 + ... + 4673171.

It is an arithmetic number, because the mean of its divisors is an integer number (108442798128).

Almost surely, 2^{1138639574751} is an apocalyptic number.

1138639574751 is a deficient number, since it is larger than the sum of its proper divisors (596445195297).

1138639574751 is a wasteful number, since it uses less digits than its factorization.

1138639574751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 466942.

The product of its digits is 19051200, while the sum is 60.

The spelling of 1138639574751 in words is "one trillion, one hundred thirty-eight billion, six hundred thirty-nine million, five hundred seventy-four thousand, seven hundred fifty-one".