111595811623 has 2 divisors, whose sum is σ = 111595811624. Its totient is φ = 111595811622.

The previous prime is 111595811609. The next prime is 111595811681. The reversal of 111595811623 is 326118595111.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111595811623 is a prime.

It is a super-2 number, since 2×111595811623² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 111595811623.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111595811023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55797905811 + 55797905812.

It is an arithmetic number, because the mean of its divisors is an integer number (55797905812).

Almost surely, 2^111595811623 is an apocalyptic number.

111595811623 is a deficient number, since it is larger than the sum of its proper divisors (1).

111595811623 is an equidigital number, since it uses as much as digits as its factorization.

111595811623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64800, while the sum is 43.

The spelling of 111595811623 in words is "one hundred eleven billion, five hundred ninety-five million, eight hundred eleven thousand, six hundred twenty-three".