113988905478 has 112 divisors (see below), whose sum is σ = 310214910240. Its totient is φ = 30652432128.

The previous prime is 113988905447. The next prime is 113988905479. The reversal of 113988905478 is 874509889311.

113988905478 is a `hidden beast` number, since 1 + 1 + 3 + 9 + 8 + 89 + 0 + 547 + 8 = 666.

It is a super-3 number, since 3×113988905478³ (a number of 34 digits) contains 333 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 a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113988905479) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 154993 + ... + 501996.

Almost surely, 2^113988905478 is an apocalyptic number.

113988905478 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

113988905478 is an abundant number, since it is smaller than the sum of its proper divisors (196226004762).

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

113988905478 is an equidigital number, since it uses as much as digits as its factorization.

113988905478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 657033 (or 657018 counting only the distinct ones).

The product of its (nonzero) digits is 17418240, while the sum is 63.

The spelling of 113988905478 in words is "one hundred thirteen billion, nine hundred eighty-eight million, nine hundred five thousand, four hundred seventy-eight".