111110009999957 has 2 divisors, whose sum is σ = 111110009999958. Its totient is φ = 111110009999956.

The previous prime is 111110009999953. The next prime is 111110009999969. The reversal of 111110009999957 is 759999900011111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73811312005201 + 37298697994756 = 8591351^2 + 6107266^2 .

It is a cyclic number.

It is not a de Polignac number, because 111110009999957 - 2² = 111110009999953 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111110009999957.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111110009999953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55555004999978 + 55555004999979.

It is an arithmetic number, because the mean of its divisors is an integer number (55555004999979).

Almost surely, 2^{111110009999957} is an apocalyptic number.

It is an amenable number.

111110009999957 is a deficient number, since it is larger than the sum of its proper divisors (1).

111110009999957 is an equidigital number, since it uses as much as digits as its factorization.

111110009999957 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2066715, while the sum is 62.

The spelling of 111110009999957 in words is "one hundred eleven trillion, one hundred ten billion, nine million, nine hundred ninety-nine thousand, nine hundred fifty-seven".