504162247681 has 2 divisors, whose sum is σ = 504162247682. Its totient is φ = 504162247680.

The previous prime is 504162247621. The next prime is 504162247691. The reversal of 504162247681 is 186742261405.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 503935293456 + 226954225 = 709884^2 + 15065^2 .

It is a cyclic number.

It is not a de Polignac number, because 504162247681 - 2⁷ = 504162247553 is a prime.

It is a super-2 number, since 2×504162247681² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (504162247621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252081123840 + 252081123841.

It is an arithmetic number, because the mean of its divisors is an integer number (252081123841).

Almost surely, 2^504162247681 is an apocalyptic number.

It is an amenable number.

504162247681 is a deficient number, since it is larger than the sum of its proper divisors (1).

504162247681 is an equidigital number, since it uses as much as digits as its factorization.

504162247681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 645120, while the sum is 46.

The spelling of 504162247681 in words is "five hundred four billion, one hundred sixty-two million, two hundred forty-seven thousand, six hundred eighty-one".