263455143537431 has 2 divisors, whose sum is σ = 263455143537432. Its totient is φ = 263455143537430.

The previous prime is 263455143537379. The next prime is 263455143537499. The reversal of 263455143537431 is 134735341554362.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 263455143537431 - 2²⁶ = 263455076428567 is a prime.

It is a super-2 number, since 2×263455143537431² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (263455143537331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131727571768715 + 131727571768716.

It is an arithmetic number, because the mean of its divisors is an integer number (131727571768716).

Almost surely, 2^{263455143537431} is an apocalyptic number.

263455143537431 is a deficient number, since it is larger than the sum of its proper divisors (1).

263455143537431 is an equidigital number, since it uses as much as digits as its factorization.

263455143537431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54432000, while the sum is 56.

The spelling of 263455143537431 in words is "two hundred sixty-three trillion, four hundred fifty-five billion, one hundred forty-three million, five hundred thirty-seven thousand, four hundred thirty-one".