111377309257 has 2 divisors, whose sum is σ = 111377309258. Its totient is φ = 111377309256.

The previous prime is 111377309243. The next prime is 111377309297. The reversal of 111377309257 is 752903773111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71921048761 + 39456260496 = 268181^2 + 198636^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111377309257 is a prime.

It is not a weakly prime, because it can be changed into another prime (111377309297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55688654628 + 55688654629.

It is an arithmetic number, because the mean of its divisors is an integer number (55688654629).

Almost surely, 2^111377309257 is an apocalyptic number.

It is an amenable number.

111377309257 is a deficient number, since it is larger than the sum of its proper divisors (1).

111377309257 is an equidigital number, since it uses as much as digits as its factorization.

111377309257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 277830, while the sum is 46.

The spelling of 111377309257 in words is "one hundred eleven billion, three hundred seventy-seven million, three hundred nine thousand, two hundred fifty-seven".