111347977506 has 8 divisors (see below), whose sum is σ = 222695955024. Its totient is φ = 37115992500.

The previous prime is 111347977501. The next prime is 111347977537. The reversal of 111347977506 is 605779743111.

It is a sphenic number, since it is the product of 3 distinct primes.

111347977506 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (111347977501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9278998120 + ... + 9278998131.

It is an arithmetic number, because the mean of its divisors is an integer number (27836994378).

Almost surely, 2^111347977506 is an apocalyptic number.

111347977506 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

111347977506 is a wasteful number, since it uses less digits than its factorization.

111347977506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18557996256.

The product of its (nonzero) digits is 1111320, while the sum is 51.

The spelling of 111347977506 in words is "one hundred eleven billion, three hundred forty-seven million, nine hundred seventy-seven thousand, five hundred six".