111426552581520 has 80 divisors (see below), whose sum is σ = 376824341466432. Its totient is φ = 27012497594880.

The previous prime is 111426552581507. The next prime is 111426552581633. The reversal of 111426552581520 is 25185255624111.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 111426552581520.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21103511107 + ... + 21103516386.

Almost surely, 2^{111426552581520} is an apocalyptic number.

111426552581520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111426552581520 is an abundant number, since it is smaller than the sum of its proper divisors (265397788884912).

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

111426552581520 is a wasteful number, since it uses less digits than its factorization.

111426552581520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42207027520 (or 42207027514 counting only the distinct ones).

The product of its (nonzero) digits is 960000, while the sum is 48.

The spelling of 111426552581520 in words is "one hundred eleven trillion, four hundred twenty-six billion, five hundred fifty-two million, five hundred eighty-one thousand, five hundred twenty".