263455143537331 has 2 divisors, whose sum is σ = 263455143537332. Its totient is φ = 263455143537330.

The previous prime is 263455143537283. The next prime is 263455143537349. The reversal of 263455143537331 is 133735341554362.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 263455143537331 - 2⁷ = 263455143537203 is a prime.

It is a super-2 number, since 2×263455143537331² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (263455143537431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131727571768665 + 131727571768666.

It is an arithmetic number, because the mean of its divisors is an integer number (131727571768666).

Almost surely, 2^{263455143537331} is an apocalyptic number.

263455143537331 is a deficient number, since it is larger than the sum of its proper divisors (1).

263455143537331 is an equidigital number, since it uses as much as digits as its factorization.

263455143537331 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40824000, while the sum is 55.

The spelling of 263455143537331 in words is "two hundred sixty-three trillion, four hundred fifty-five billion, one hundred forty-three million, five hundred thirty-seven thousand, three hundred thirty-one".