111550064020 has 24 divisors (see below), whose sum is σ = 236670139944. Its totient is φ = 44160024576.

The previous prime is 111550064011. The next prime is 111550064039. The reversal of 111550064020 is 20460055111.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 30304542724 + 81245521296 = 174082^2 + 285036^2 .

It is a congruent number.

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, 28748077 + ... + 28751956.

It is an arithmetic number, because the mean of its divisors is an integer number (9861255831).

Almost surely, 2^111550064020 is an apocalyptic number.

111550064020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111550064020 is an abundant number, since it is smaller than the sum of its proper divisors (125120075924).

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

111550064020 is a wasteful number, since it uses less digits than its factorization.

111550064020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57500139 (or 57500137 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 25.

The spelling of 111550064020 in words is "one hundred eleven billion, five hundred fifty million, sixty-four thousand, twenty".