102856522669 has 2 divisors, whose sum is σ = 102856522670. Its totient is φ = 102856522668.

The previous prime is 102856522547. The next prime is 102856522673. The reversal of 102856522669 is 966225658201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 98288520100 + 4568002569 = 313510^2 + 67587^2 .

It is a cyclic number.

It is not a de Polignac number, because 102856522669 - 2⁹ = 102856522157 is a prime.

It is a super-2 number, since 2×102856522669² (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 (102856522969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51428261334 + 51428261335.

It is an arithmetic number, because the mean of its divisors is an integer number (51428261335).

Almost surely, 2^102856522669 is an apocalyptic number.

It is an amenable number.

102856522669 is a deficient number, since it is larger than the sum of its proper divisors (1).

102856522669 is an equidigital number, since it uses as much as digits as its factorization.

102856522669 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3110400, while the sum is 52.

The spelling of 102856522669 in words is "one hundred two billion, eight hundred fifty-six million, five hundred twenty-two thousand, six hundred sixty-nine".