111512656513 has 2 divisors, whose sum is σ = 111512656514. Its totient is φ = 111512656512.

The previous prime is 111512656483. The next prime is 111512656529. The reversal of 111512656513 is 315656215111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 109837227889 + 1675428624 = 331417^2 + 40932^2 .

It is a cyclic number.

It is not a de Polignac number, because 111512656513 - 2⁵ = 111512656481 is a prime.

It is not a weakly prime, because it can be changed into another prime (111512656573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55756328256 + 55756328257.

It is an arithmetic number, because the mean of its divisors is an integer number (55756328257).

Almost surely, 2^111512656513 is an apocalyptic number.

It is an amenable number.

111512656513 is a deficient number, since it is larger than the sum of its proper divisors (1).

111512656513 is an equidigital number, since it uses as much as digits as its factorization.

111512656513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27000, while the sum is 37.

The spelling of 111512656513 in words is "one hundred eleven billion, five hundred twelve million, six hundred fifty-six thousand, five hundred thirteen".