6218881167953 has 2 divisors, whose sum is σ = 6218881167954. Its totient is φ = 6218881167952.

The previous prime is 6218881167937. The next prime is 6218881167979. The reversal of 6218881167953 is 3597611888126.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5704373354689 + 514507813264 = 2388383^2 + 717292^2 .

It is a cyclic number.

It is not a de Polignac number, because 6218881167953 - 2⁴ = 6218881167937 is a prime.

It is a super-2 number, since 2×6218881167953² (a number of 26 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 6218881167953.

It is not a weakly prime, because it can be changed into another prime (6218881167853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3109440583976 + 3109440583977.

It is an arithmetic number, because the mean of its divisors is an integer number (3109440583977).

Almost surely, 2^{6218881167953} is an apocalyptic number.

It is an amenable number.

6218881167953 is a deficient number, since it is larger than the sum of its proper divisors (1).

6218881167953 is an equidigital number, since it uses as much as digits as its factorization.

6218881167953 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34836480, while the sum is 65.

The spelling of 6218881167953 in words is "six trillion, two hundred eighteen billion, eight hundred eighty-one million, one hundred sixty-seven thousand, nine hundred fifty-three".