111731733738 has 24 divisors (see below), whose sum is σ = 243933408576. Its totient is φ = 36959605800.

The previous prime is 111731733683. The next prime is 111731733749. The reversal of 111731733738 is 837337137111.

It is a junction number, because it is equal to n+sod(n) for n = 111731733693 and 111731733702.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23689698 + ... + 23694413.

It is an arithmetic number, because the mean of its divisors is an integer number (10163892024).

Almost surely, 2^111731733738 is an apocalyptic number.

111731733738 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

111731733738 is an abundant number, since it is smaller than the sum of its proper divisors (132201674838).

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

111731733738 is a wasteful number, since it uses less digits than its factorization.

111731733738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47384250 (or 47384247 counting only the distinct ones).

The product of its digits is 222264, while the sum is 45.

The spelling of 111731733738 in words is "one hundred eleven billion, seven hundred thirty-one million, seven hundred thirty-three thousand, seven hundred thirty-eight".