111781319468 has 24 divisors (see below), whose sum is σ = 240759765792. Its totient is φ = 44221181184.

The previous prime is 111781319399. The next prime is 111781319471. The reversal of 111781319468 is 864913187111.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

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, 153545405 + ... + 153546132.

It is an arithmetic number, because the mean of its divisors is an integer number (10031656908).

Almost surely, 2^111781319468 is an apocalyptic number.

It is an amenable number.

111781319468 is an abundant number, since it is smaller than the sum of its proper divisors (128978446324).

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

111781319468 is a wasteful number, since it uses less digits than its factorization.

111781319468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307091561 (or 307091559 counting only the distinct ones).

The product of its digits is 290304, while the sum is 50.

The spelling of 111781319468 in words is "one hundred eleven billion, seven hundred eighty-one million, three hundred nineteen thousand, four hundred sixty-eight".