846139555881 has 12 divisors (see below), whose sum is σ = 1222209730560. Its totient is φ = 564089275800.

The previous prime is 846139555837. The next prime is 846139555907. The reversal of 846139555881 is 188555931648.

846139555881 is a `hidden beast` number, since 8 + 4 + 613 + 9 + 5 + 5 + 5 + 8 + 8 + 1 = 666.

It is not a de Polignac number, because 846139555881 - 2⁹ = 846139555369 is a prime.

It is a super-2 number, since 2×846139555881² (a number of 25 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (63) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (846139505881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2045880 + ... + 2424438.

It is an arithmetic number, because the mean of its divisors is an integer number (101850810880).

Almost surely, 2^846139555881 is an apocalyptic number.

It is an amenable number.

846139555881 is a deficient number, since it is larger than the sum of its proper divisors (376070174679).

846139555881 is a wasteful number, since it uses less digits than its factorization.

846139555881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 626916 (or 626913 counting only the distinct ones).

The product of its digits is 41472000, while the sum is 63.

The spelling of 846139555881 in words is "eight hundred forty-six billion, one hundred thirty-nine million, five hundred fifty-five thousand, eight hundred eighty-one".