868810184923 has 2 divisors, whose sum is σ = 868810184924. Its totient is φ = 868810184922.

The previous prime is 868810184873. The next prime is 868810184927. The reversal of 868810184923 is 329481018868.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-868810184923 is a prime.

It is a super-2 number, since 2×868810184923² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (868810184927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 434405092461 + 434405092462.

It is an arithmetic number, because the mean of its divisors is an integer number (434405092462).

Almost surely, 2^868810184923 is an apocalyptic number.

868810184923 is a deficient number, since it is larger than the sum of its proper divisors (1).

868810184923 is an equidigital number, since it uses as much as digits as its factorization.

868810184923 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5308416, while the sum is 58.

The spelling of 868810184923 in words is "eight hundred sixty-eight billion, eight hundred ten million, one hundred eighty-four thousand, nine hundred twenty-three".