111551061612 has 48 divisors (see below), whose sum is σ = 262049711840. Its totient is φ = 36931894272.

The previous prime is 111551061577. The next prime is 111551061617. The reversal of 111551061612 is 216160155111.

It is a self number, because there is not a number n which added to its sum of digits gives 111551061612.

It is not an unprimeable number, because it can be changed into a prime (111551061617) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5258964 + ... + 5280132.

Almost surely, 2^111551061612 is an apocalyptic number.

111551061612 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

111551061612 is an abundant number, since it is smaller than the sum of its proper divisors (150498650228).

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

111551061612 is a wasteful number, since it uses less digits than its factorization.

111551061612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24130 (or 24128 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 30.

The spelling of 111551061612 in words is "one hundred eleven billion, five hundred fifty-one million, sixty-one thousand, six hundred twelve".