11854538556 has 48 divisors (see below), whose sum is σ = 31624938240. Its totient is φ = 3385635840.

The previous prime is 11854538551. The next prime is 11854538557. The reversal of 11854538556 is 65583545811.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 11854538499 and 11854538508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11854538551) 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, 189276 + ... + 243996.

It is an arithmetic number, because the mean of its divisors is an integer number (658852880).

Almost surely, 2^11854538556 is an apocalyptic number.

It is an amenable number.

11854538556 is an abundant number, since it is smaller than the sum of its proper divisors (19770399684).

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

11854538556 is a wasteful number, since it uses less digits than its factorization.

11854538556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57314 (or 57312 counting only the distinct ones).

The product of its digits is 2880000, while the sum is 51.

The spelling of 11854538556 in words is "eleven billion, eight hundred fifty-four million, five hundred thirty-eight thousand, five hundred fifty-six".