872965477481 has 2 divisors, whose sum is σ = 872965477482. Its totient is φ = 872965477480.

The previous prime is 872965477471. The next prime is 872965477543. The reversal of 872965477481 is 184774569278.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 542961185881 + 330004291600 = 736859^2 + 574460^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-872965477481 is a prime.

It is a super-2 number, since 2×872965477481² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (872965477451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 436482738740 + 436482738741.

It is an arithmetic number, because the mean of its divisors is an integer number (436482738741).

Almost surely, 2^872965477481 is an apocalyptic number.

It is an amenable number.

872965477481 is a deficient number, since it is larger than the sum of its proper divisors (1).

872965477481 is an equidigital number, since it uses as much as digits as its factorization.

872965477481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 189665280, while the sum is 68.

The spelling of 872965477481 in words is "eight hundred seventy-two billion, nine hundred sixty-five million, four hundred seventy-seven thousand, four hundred eighty-one".