518972268953 has 2 divisors, whose sum is σ = 518972268954. Its totient is φ = 518972268952.

The previous prime is 518972268781. The next prime is 518972268961. The reversal of 518972268953 is 359862279815.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 503350518784 + 15621750169 = 709472^2 + 124987^2 .

It is a cyclic number.

It is not a de Polignac number, because 518972268953 - 2⁸ = 518972268697 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 518972268953.

It is not a weakly prime, because it can be changed into another prime (518978268953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 259486134476 + 259486134477.

It is an arithmetic number, because the mean of its divisors is an integer number (259486134477).

Almost surely, 2^518972268953 is an apocalyptic number.

It is an amenable number.

518972268953 is a deficient number, since it is larger than the sum of its proper divisors (1).

518972268953 is an equidigital number, since it uses as much as digits as its factorization.

518972268953 is an evil number, because the sum of its binary digits is even.

The product of its digits is 65318400, while the sum is 65.

The spelling of 518972268953 in words is "five hundred eighteen billion, nine hundred seventy-two million, two hundred sixty-eight thousand, nine hundred fifty-three".