111832772987 has 16 divisors (see below), whose sum is σ = 128689656480. Its totient is φ = 96266506752.

The previous prime is 111832772963. The next prime is 111832773043. The reversal of 111832772987 is 789277238111.

It is a happy number.

It is not a de Polignac number, because 111832772987 - 2⁸ = 111832772731 is a prime.

It is a super-2 number, since 2×111832772987² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111832772917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2297153 + ... + 2345330.

It is an arithmetic number, because the mean of its divisors is an integer number (8043103530).

Almost surely, 2^111832772987 is an apocalyptic number.

111832772987 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

111832772987 is a deficient number, since it is larger than the sum of its proper divisors (16856883493).

111832772987 is a wasteful number, since it uses less digits than its factorization.

111832772987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4642622.

The product of its digits is 2370816, while the sum is 56.

The spelling of 111832772987 in words is "one hundred eleven billion, eight hundred thirty-two million, seven hundred seventy-two thousand, nine hundred eighty-seven".