871620797741 has 2 divisors, whose sum is σ = 871620797742. Its totient is φ = 871620797740.

The previous prime is 871620797699. The next prime is 871620797759. The reversal of 871620797741 is 147797026178.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 824865384841 + 46755412900 = 908221^2 + 216230^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-871620797741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (871620797041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 435810398870 + 435810398871.

It is an arithmetic number, because the mean of its divisors is an integer number (435810398871).

Almost surely, 2^871620797741 is an apocalyptic number.

It is an amenable number.

871620797741 is a deficient number, since it is larger than the sum of its proper divisors (1).

871620797741 is an equidigital number, since it uses as much as digits as its factorization.

871620797741 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8297856, while the sum is 59.

The spelling of 871620797741 in words is "eight hundred seventy-one billion, six hundred twenty million, seven hundred ninety-seven thousand, seven hundred forty-one".