1253563556831 has 2 divisors, whose sum is σ = 1253563556832. Its totient is φ = 1253563556830.

The previous prime is 1253563556809. The next prime is 1253563556837. The reversal of 1253563556831 is 1386553653521.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1253563556831 - 2³⁴ = 1236383687647 is a prime.

It is a super-2 number, since 2×1253563556831² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1253563556837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 626781778415 + 626781778416.

It is an arithmetic number, because the mean of its divisors is an integer number (626781778416).

Almost surely, 2^{1253563556831} is an apocalyptic number.

1253563556831 is a deficient number, since it is larger than the sum of its proper divisors (1).

1253563556831 is an equidigital number, since it uses as much as digits as its factorization.

1253563556831 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9720000, while the sum is 53.

The spelling of 1253563556831 in words is "one trillion, two hundred fifty-three billion, five hundred sixty-three million, five hundred fifty-six thousand, eight hundred thirty-one".