1253863262591 has 2 divisors, whose sum is σ = 1253863262592. Its totient is φ = 1253863262590.

The previous prime is 1253863262557. The next prime is 1253863262593. The reversal of 1253863262591 is 1952623683521.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1253863262591 is a prime.

Together with 1253863262593, 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 (1253863262593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 626931631295 + 626931631296.

It is an arithmetic number, because the mean of its divisors is an integer number (626931631296).

Almost surely, 2^{1253863262591} is an apocalyptic number.

1253863262591 is a deficient number, since it is larger than the sum of its proper divisors (1).

1253863262591 is an equidigital number, since it uses as much as digits as its factorization.

1253863262591 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4665600, while the sum is 53.

The spelling of 1253863262591 in words is "one trillion, two hundred fifty-three billion, eight hundred sixty-three million, two hundred sixty-two thousand, five hundred ninety-one".