1253513660279 has 2 divisors, whose sum is σ = 1253513660280. Its totient is φ = 1253513660278.

The previous prime is 1253513660251. The next prime is 1253513660281. The reversal of 1253513660279 is 9720663153521.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1253513660279 is a prime.

Together with 1253513660281, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1253513660299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 626756830139 + 626756830140.

It is an arithmetic number, because the mean of its divisors is an integer number (626756830140).

Almost surely, 2^{1253513660279} is an apocalyptic number.

1253513660279 is a deficient number, since it is larger than the sum of its proper divisors (1).

1253513660279 is an equidigital number, since it uses as much as digits as its factorization.

1253513660279 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2041200, while the sum is 50.

The spelling of 1253513660279 in words is "one trillion, two hundred fifty-three billion, five hundred thirteen million, six hundred sixty thousand, two hundred seventy-nine".