871620797699 has 2 divisors, whose sum is σ = 871620797700. Its totient is φ = 871620797698.

The previous prime is 871620797669. The next prime is 871620797741. The reversal of 871620797699 is 996797026178.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-871620797699 is a prime.

It is not a weakly prime, because it can be changed into another prime (871620797629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 435810398849 + 435810398850.

It is an arithmetic number, because the mean of its divisors is an integer number (435810398850).

Almost surely, 2^871620797699 is an apocalyptic number.

871620797699 is a deficient number, since it is larger than the sum of its proper divisors (1).

871620797699 is an equidigital number, since it uses as much as digits as its factorization.

871620797699 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144027072, while the sum is 71.

The spelling of 871620797699 in words is "eight hundred seventy-one billion, six hundred twenty million, seven hundred ninety-seven thousand, six hundred ninety-nine".