111664916590 has 16 divisors (see below), whose sum is σ = 201651568272. Its totient is φ = 44520473664.

The previous prime is 111664916537. The next prime is 111664916611. The reversal of 111664916590 is 95619466111.

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, 18183399 + ... + 18189538.

It is an arithmetic number, because the mean of its divisors is an integer number (12603223017).

Almost surely, 2^111664916590 is an apocalyptic number.

111664916590 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

111664916590 is a deficient number, since it is larger than the sum of its proper divisors (89986651682).

111664916590 is a wasteful number, since it uses less digits than its factorization.

111664916590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36373251.

The product of its (nonzero) digits is 349920, while the sum is 49.

The spelling of 111664916590 in words is "one hundred eleven billion, six hundred sixty-four million, nine hundred sixteen thousand, five hundred ninety".