68372500253 has 2 divisors, whose sum is σ = 68372500254. Its totient is φ = 68372500252.

The previous prime is 68372500181. The next prime is 68372500291. The reversal of 68372500253 is 35200527386.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57510274969 + 10862225284 = 239813^2 + 104222^2 .

It is a cyclic number.

It is not a de Polignac number, because 68372500253 - 2²⁰ = 68371451677 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68372500253.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68372400253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34186250126 + 34186250127.

It is an arithmetic number, because the mean of its divisors is an integer number (34186250127).

Almost surely, 2^68372500253 is an apocalyptic number.

It is an amenable number.

68372500253 is a deficient number, since it is larger than the sum of its proper divisors (1).

68372500253 is an equidigital number, since it uses as much as digits as its factorization.

68372500253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 302400, while the sum is 41.

The spelling of 68372500253 in words is "sixty-eight billion, three hundred seventy-two million, five hundred thousand, two hundred fifty-three".