113861837808 has 160 divisors (see below), whose sum is σ = 332613632000. Its totient is φ = 37287661824.

The previous prime is 113861837797. The next prime is 113861837813. The reversal of 113861837808 is 808738168311.

It is a happy number.

113861837808 is a `hidden beast` number, since 1 + 1 + 386 + 183 + 7 + 80 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5640918 + ... + 5661066.

It is an arithmetic number, because the mean of its divisors is an integer number (2078835200).

Almost surely, 2^113861837808 is an apocalyptic number.

113861837808 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 113861837808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (166306816000).

113861837808 is an abundant number, since it is smaller than the sum of its proper divisors (218751794192).

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

113861837808 is a wasteful number, since it uses less digits than its factorization.

113861837808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20396 (or 20384 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 54.

The spelling of 113861837808 in words is "one hundred thirteen billion, eight hundred sixty-one million, eight hundred thirty-seven thousand, eight hundred eight".