102039996251 has 2 divisors, whose sum is σ = 102039996252. Its totient is φ = 102039996250.

The previous prime is 102039996221. The next prime is 102039996263. The reversal of 102039996251 is 152699930201.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 102039996251 - 2¹⁸ = 102039734107 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 102039996196 and 102039996205.

It is not a weakly prime, because it can be changed into another prime (102039996221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51019998125 + 51019998126.

It is an arithmetic number, because the mean of its divisors is an integer number (51019998126).

Almost surely, 2^102039996251 is an apocalyptic number.

102039996251 is a deficient number, since it is larger than the sum of its proper divisors (1).

102039996251 is an equidigital number, since it uses as much as digits as its factorization.

102039996251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 262440, while the sum is 47.

The spelling of 102039996251 in words is "one hundred two billion, thirty-nine million, nine hundred ninety-six thousand, two hundred fifty-one".