111081782115 has 24 divisors (see below), whose sum is σ = 202675533840. Its totient is φ = 56125531584.

The previous prime is 111081782111. The next prime is 111081782129. The reversal of 111081782115 is 511287180111.

It is not a de Polignac number, because 111081782115 - 2² = 111081782111 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111081782115.

It is not an unprimeable number, because it can be changed into a prime (111081782111) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 64959252 + ... + 64960961.

It is an arithmetic number, because the mean of its divisors is an integer number (8444813910).

Almost surely, 2^111081782115 is an apocalyptic number.

111081782115 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

111081782115 is a deficient number, since it is larger than the sum of its proper divisors (91593751725).

111081782115 is a wasteful number, since it uses less digits than its factorization.

111081782115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129920243 (or 129920240 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 36.

The spelling of 111081782115 in words is "one hundred eleven billion, eighty-one million, seven hundred eighty-two thousand, one hundred fifteen".