102612512549 has 2 divisors, whose sum is σ = 102612512550. Its totient is φ = 102612512548.

The previous prime is 102612512491. The next prime is 102612512591. The reversal of 102612512549 is 945215216201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 88384317025 + 14228195524 = 297295^2 + 119282^2 .

It is an emirp because it is prime and its reverse (945215216201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 102612512549 - 2⁸ = 102612512293 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

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 polite number, since it can be written as a sum of consecutive naturals, namely, 51306256274 + 51306256275.

It is an arithmetic number, because the mean of its divisors is an integer number (51306256275).

Almost surely, 2^102612512549 is an apocalyptic number.

It is an amenable number.

102612512549 is a deficient number, since it is larger than the sum of its proper divisors (1).

102612512549 is an equidigital number, since it uses as much as digits as its factorization.

102612512549 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43200, while the sum is 38.

The spelling of 102612512549 in words is "one hundred two billion, six hundred twelve million, five hundred twelve thousand, five hundred forty-nine".