111565023426420 has 48 divisors (see below), whose sum is σ = 312923455752768. Its totient is φ = 29699111946240.

The previous prime is 111565023426379. The next prime is 111565023426421. The reversal of 111565023426420 is 24624320565111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111565023426421) 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, 1611245326 + ... + 1611314565.

It is an arithmetic number, because the mean of its divisors is an integer number (6519238661516).

Almost surely, 2^{111565023426420} is an apocalyptic number.

111565023426420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111565023426420 is an abundant number, since it is smaller than the sum of its proper divisors (201358432326348).

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

111565023426420 is a wasteful number, since it uses less digits than its factorization.

111565023426420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3222560480 (or 3222560478 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 42.

The spelling of 111565023426420 in words is "one hundred eleven trillion, five hundred sixty-five billion, twenty-three million, four hundred twenty-six thousand, four hundred twenty".