265645553659 has 2 divisors, whose sum is σ = 265645553660. Its totient is φ = 265645553658.

The previous prime is 265645553597. The next prime is 265645553687. The reversal of 265645553659 is 956355546562.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 265645553659 - 2²⁷ = 265511335931 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 265645553597 and 265645553606.

It is not a weakly prime, because it can be changed into another prime (265645553699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132822776829 + 132822776830.

It is an arithmetic number, because the mean of its divisors is an integer number (132822776830).

Almost surely, 2^265645553659 is an apocalyptic number.

265645553659 is a deficient number, since it is larger than the sum of its proper divisors (1).

265645553659 is an equidigital number, since it uses as much as digits as its factorization.

265645553659 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145800000, while the sum is 61.

The spelling of 265645553659 in words is "two hundred sixty-five billion, six hundred forty-five million, five hundred fifty-three thousand, six hundred fifty-nine".