111660765420 has 24 divisors (see below), whose sum is σ = 312650143344. Its totient is φ = 29776204096.

The previous prime is 111660765407. The next prime is 111660765421. The reversal of 111660765420 is 24567066111.

It is not an unprimeable number, because it can be changed into a prime (111660765421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 930506319 + ... + 930506438.

It is an arithmetic number, because the mean of its divisors is an integer number (13027089306).

Almost surely, 2^111660765420 is an apocalyptic number.

111660765420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111660765420 is an abundant number, since it is smaller than the sum of its proper divisors (200989377924).

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

111660765420 is a wasteful number, since it uses less digits than its factorization.

111660765420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1861012769 (or 1861012767 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 39.

The spelling of 111660765420 in words is "one hundred eleven billion, six hundred sixty million, seven hundred sixty-five thousand, four hundred twenty".