1139556385854 has 24 divisors (see below), whose sum is σ = 2481572035800. Its totient is φ = 377923944048.

The previous prime is 1139556385841. The next prime is 1139556385859. The reversal of 1139556385854 is 4585836559311.

1139556385854 is a `hidden beast` number, since 1 + 13 + 9 + 5 + 5 + 6 + 38 + 585 + 4 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 1139556385791 and 1139556385800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1139556385859) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 160678404 + ... + 160685495.

It is an arithmetic number, because the mean of its divisors is an integer number (103398834825).

Almost surely, 2^{1139556385854} is an apocalyptic number.

1139556385854 is an abundant number, since it is smaller than the sum of its proper divisors (1342015649946).

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

1139556385854 is a wasteful number, since it uses less digits than its factorization.

1139556385854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321364104 (or 321364101 counting only the distinct ones).

The product of its digits is 77760000, while the sum is 63.

The spelling of 1139556385854 in words is "one trillion, one hundred thirty-nine billion, five hundred fifty-six million, three hundred eighty-five thousand, eight hundred fifty-four".