111005611690 has 8 divisors (see below), whose sum is σ = 199810101060. Its totient is φ = 44402244672.

The previous prime is 111005611681. The next prime is 111005611693. The reversal of 111005611690 is 96116500111.

It can be written as a sum of positive squares in 2 ways, for example, as 110683301481 + 322310209 = 332691^2 + 17953^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×111005611690² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (111005611693) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5550280575 + ... + 5550280594.

Almost surely, 2^111005611690 is an apocalyptic number.

111005611690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

111005611690 is a deficient number, since it is larger than the sum of its proper divisors (88804489370).

111005611690 is a wasteful number, since it uses less digits than its factorization.

111005611690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11100561176.

The product of its (nonzero) digits is 1620, while the sum is 31.

The spelling of 111005611690 in words is "one hundred eleven billion, five million, six hundred eleven thousand, six hundred ninety".