111666072765 has 16 divisors (see below), whose sum is σ = 192409233408. Its totient is φ = 54974066496.

The previous prime is 111666072733. The next prime is 111666072767. The reversal of 111666072765 is 567270666111.

It is not a de Polignac number, because 111666072765 - 2⁵ = 111666072733 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111666072767) 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 15 ways as a sum of consecutive naturals, for example, 286323069 + ... + 286323458.

It is an arithmetic number, because the mean of its divisors is an integer number (12025577088).

Almost surely, 2^111666072765 is an apocalyptic number.

111666072765 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

111666072765 is a deficient number, since it is larger than the sum of its proper divisors (80743160643).

111666072765 is a wasteful number, since it uses less digits than its factorization.

111666072765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 572646548.

The product of its (nonzero) digits is 635040, while the sum is 48.

The spelling of 111666072765 in words is "one hundred eleven billion, six hundred sixty-six million, seventy-two thousand, seven hundred sixty-five".