112187945257 has 2 divisors, whose sum is σ = 112187945258. Its totient is φ = 112187945256.

The previous prime is 112187945203. The next prime is 112187945291. The reversal of 112187945257 is 752549781211.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72180344896 + 40007600361 = 268664^2 + 200019^2 .

It is a cyclic number.

It is not a de Polignac number, because 112187945257 - 2²³ = 112179556649 is a prime.

It is a super-2 number, since 2×112187945257² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (112187946257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56093972628 + 56093972629.

It is an arithmetic number, because the mean of its divisors is an integer number (56093972629).

Almost surely, 2^112187945257 is an apocalyptic number.

It is an amenable number.

112187945257 is a deficient number, since it is larger than the sum of its proper divisors (1).

112187945257 is an equidigital number, since it uses as much as digits as its factorization.

112187945257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1411200, while the sum is 52.

The spelling of 112187945257 in words is "one hundred twelve billion, one hundred eighty-seven million, nine hundred forty-five thousand, two hundred fifty-seven".