265535940650531 has 2 divisors, whose sum is σ = 265535940650532. Its totient is φ = 265535940650530.

The previous prime is 265535940650333. The next prime is 265535940650543. The reversal of 265535940650531 is 135056049535562.

265535940650531 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 265535940650531 - 2⁴² = 261137894139427 is a prime.

It is a super-2 number, since 2×265535940650531² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (265535940680531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132767970325265 + 132767970325266.

It is an arithmetic number, because the mean of its divisors is an integer number (132767970325266).

Almost surely, 2^{265535940650531} is an apocalyptic number.

265535940650531 is a deficient number, since it is larger than the sum of its proper divisors (1).

265535940650531 is an equidigital number, since it uses as much as digits as its factorization.

265535940650531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72900000, while the sum is 59.

The spelling of 265535940650531 in words is "two hundred sixty-five trillion, five hundred thirty-five billion, nine hundred forty million, six hundred fifty thousand, five hundred thirty-one".