102612512591 has 2 divisors, whose sum is σ = 102612512592. Its totient is φ = 102612512590.

The previous prime is 102612512549. The next prime is 102612512599. The reversal of 102612512591 is 195215216201.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 102612512591 - 2²² = 102608318287 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102612512599) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51306256295 + 51306256296.

It is an arithmetic number, because the mean of its divisors is an integer number (51306256296).

Almost surely, 2^102612512591 is an apocalyptic number.

102612512591 is a deficient number, since it is larger than the sum of its proper divisors (1).

102612512591 is an equidigital number, since it uses as much as digits as its factorization.

102612512591 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10800, while the sum is 35.

Adding to 102612512591 its reverse (195215216201), we get a palindrome (297827728792).

The spelling of 102612512591 in words is "one hundred two billion, six hundred twelve million, five hundred twelve thousand, five hundred ninety-one".