102806057239 has 2 divisors, whose sum is σ = 102806057240. Its totient is φ = 102806057238.

The previous prime is 102806057209. The next prime is 102806057243. The reversal of 102806057239 is 932750608201.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 102806057239 - 2¹⁵ = 102806024471 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 102806057195 and 102806057204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102806057209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51403028619 + 51403028620.

It is an arithmetic number, because the mean of its divisors is an integer number (51403028620).

Almost surely, 2^102806057239 is an apocalyptic number.

102806057239 is a deficient number, since it is larger than the sum of its proper divisors (1).

102806057239 is an equidigital number, since it uses as much as digits as its factorization.

102806057239 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 181440, while the sum is 43.

The spelling of 102806057239 in words is "one hundred two billion, eight hundred six million, fifty-seven thousand, two hundred thirty-nine".