11858855680 has 72 divisors (see below), whose sum is σ = 32463641952. Its totient is φ = 4065890304.

The previous prime is 11858855647. The next prime is 11858855693. The reversal of 11858855680 is 8655885811.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 652807 + ... + 670726.

It is an arithmetic number, because the mean of its divisors is an integer number (450883916).

Almost surely, 2^11858855680 is an apocalyptic number.

11858855680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11858855680 is an abundant number, since it is smaller than the sum of its proper divisors (20604786272).

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

11858855680 is an equidigital number, since it uses as much as digits as its factorization.

11858855680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1323561 (or 1323547 counting only the distinct ones).

The product of its (nonzero) digits is 3072000, while the sum is 55.

The spelling of 11858855680 in words is "eleven billion, eight hundred fifty-eight million, eight hundred fifty-five thousand, six hundred eighty".