869344971851 has 2 divisors, whose sum is σ = 869344971852. Its totient is φ = 869344971850.

The previous prime is 869344971839. The next prime is 869344971893. The reversal of 869344971851 is 158179443968.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 869344971851 - 2³⁰ = 868271230027 is a prime.

It is not a weakly prime, because it can be changed into another prime (869344971811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 434672485925 + 434672485926.

It is an arithmetic number, because the mean of its divisors is an integer number (434672485926).

Almost surely, 2^869344971851 is an apocalyptic number.

869344971851 is a deficient number, since it is larger than the sum of its proper divisors (1).

869344971851 is an equidigital number, since it uses as much as digits as its factorization.

869344971851 is an evil number, because the sum of its binary digits is even.

The product of its digits is 52254720, while the sum is 65.

The spelling of 869344971851 in words is "eight hundred sixty-nine billion, three hundred forty-four million, nine hundred seventy-one thousand, eight hundred fifty-one".