111642923380 has 24 divisors (see below), whose sum is σ = 234500506632. Its totient is φ = 44647575552.

The previous prime is 111642923377. The next prime is 111642923383. The reversal of 111642923380 is 83329246111.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (111642923377) and next prime (111642923383).

It can be written as a sum of positive squares in 4 ways, for example, as 58391822736 + 53251100644 = 241644^2 + 230762^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111642923383) 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, 503817 + ... + 690736.

It is an arithmetic number, because the mean of its divisors is an integer number (9770854443).

Almost surely, 2^111642923380 is an apocalyptic number.

111642923380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111642923380 is an abundant number, since it is smaller than the sum of its proper divisors (122857583252).

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

111642923380 is a wasteful number, since it uses less digits than its factorization.

111642923380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1199235 (or 1199233 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 40.

The spelling of 111642923380 in words is "one hundred eleven billion, six hundred forty-two million, nine hundred twenty-three thousand, three hundred eighty".