505162187953 has 2 divisors, whose sum is σ = 505162187954. Its totient is φ = 505162187952.

The previous prime is 505162187941. The next prime is 505162187969. The reversal of 505162187953 is 359781261505.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 503747901504 + 1414286449 = 709752^2 + 37607^2 .

It is a cyclic number.

It is not a de Polignac number, because 505162187953 - 2²⁵ = 505128633521 is a prime.

It is a super-2 number, since 2×505162187953² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 505162187953.

It is not a weakly prime, because it can be changed into another prime (505162188953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252581093976 + 252581093977.

It is an arithmetic number, because the mean of its divisors is an integer number (252581093977).

Almost surely, 2^505162187953 is an apocalyptic number.

It is an amenable number.

505162187953 is a deficient number, since it is larger than the sum of its proper divisors (1).

505162187953 is an equidigital number, since it uses as much as digits as its factorization.

505162187953 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2268000, while the sum is 52.

The spelling of 505162187953 in words is "five hundred five billion, one hundred sixty-two million, one hundred eighty-seven thousand, nine hundred fifty-three".