102642657269 has 2 divisors, whose sum is σ = 102642657270. Its totient is φ = 102642657268.

The previous prime is 102642657203. The next prime is 102642657277. The reversal of 102642657269 is 962756246201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 100406596900 + 2236060369 = 316870^2 + 47287^2 .

It is a cyclic number.

It is not a de Polignac number, because 102642657269 - 2²⁴ = 102625880053 is a prime.

It is a super-2 number, since 2×102642657269² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102642657289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51321328634 + 51321328635.

It is an arithmetic number, because the mean of its divisors is an integer number (51321328635).

Almost surely, 2^102642657269 is an apocalyptic number.

It is an amenable number.

102642657269 is a deficient number, since it is larger than the sum of its proper divisors (1).

102642657269 is an equidigital number, since it uses as much as digits as its factorization.

102642657269 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2177280, while the sum is 50.

The spelling of 102642657269 in words is "one hundred two billion, six hundred forty-two million, six hundred fifty-seven thousand, two hundred sixty-nine".