111631689590 has 16 divisors (see below), whose sum is σ = 202216897872. Its totient is φ = 44368263264.

The previous prime is 111631689581. The next prime is 111631689599. The reversal of 111631689590 is 95986136111.

It is an interprime number because it is at equal distance from previous prime (111631689581) and next prime (111631689599).

It is a super-3 number, since 3×111631689590³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111631689599) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35549924 + ... + 35553063.

It is an arithmetic number, because the mean of its divisors is an integer number (12638556117).

Almost surely, 2^111631689590 is an apocalyptic number.

111631689590 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

111631689590 is a deficient number, since it is larger than the sum of its proper divisors (90585208282).

111631689590 is a wasteful number, since it uses less digits than its factorization.

111631689590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71103151.

The product of its (nonzero) digits is 349920, while the sum is 50.

The spelling of 111631689590 in words is "one hundred eleven billion, six hundred thirty-one million, six hundred eighty-nine thousand, five hundred ninety".