265553320667 has 2 divisors, whose sum is σ = 265553320668. Its totient is φ = 265553320666.

The previous prime is 265553320651. The next prime is 265553320679. The reversal of 265553320667 is 766023355562.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 265553320667 - 2⁴ = 265553320651 is a prime.

It is a super-2 number, since 2×265553320667² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (265553322667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132776660333 + 132776660334.

It is an arithmetic number, because the mean of its divisors is an integer number (132776660334).

Almost surely, 2^265553320667 is an apocalyptic number.

265553320667 is a deficient number, since it is larger than the sum of its proper divisors (1).

265553320667 is an equidigital number, since it uses as much as digits as its factorization.

265553320667 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6804000, while the sum is 50.

The spelling of 265553320667 in words is "two hundred sixty-five billion, five hundred fifty-three million, three hundred twenty thousand, six hundred sixty-seven".