111866670539790 has 16 divisors (see below), whose sum is σ = 268480009295568. Its totient is φ = 29831112143936.

The previous prime is 111866670539777. The next prime is 111866670539791. The reversal of 111866670539790 is 97935076668111.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111866670539791) 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, 1864444508967 + ... + 1864444509026.

It is an arithmetic number, because the mean of its divisors is an integer number (16780000580973).

Almost surely, 2^{111866670539790} is an apocalyptic number.

111866670539790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

111866670539790 is an abundant number, since it is smaller than the sum of its proper divisors (156613338755778).

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

111866670539790 is a wasteful number, since it uses less digits than its factorization.

111866670539790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3728889018003.

The product of its (nonzero) digits is 102876480, while the sum is 69.

The spelling of 111866670539790 in words is "one hundred eleven trillion, eight hundred sixty-six billion, six hundred seventy million, five hundred thirty-nine thousand, seven hundred ninety".