265889930749 has 2 divisors, whose sum is σ = 265889930750. Its totient is φ = 265889930748.

The previous prime is 265889930699. The next prime is 265889930753. The reversal of 265889930749 is 947039988562.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 203484894649 + 62405036100 = 451093^2 + 249810^2 .

It is a cyclic number.

It is not a de Polignac number, because 265889930749 - 2²¹ = 265887833597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (265889936749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132944965374 + 132944965375.

It is an arithmetic number, because the mean of its divisors is an integer number (132944965375).

Almost surely, 2^265889930749 is an apocalyptic number.

It is an amenable number.

265889930749 is a deficient number, since it is larger than the sum of its proper divisors (1).

265889930749 is an equidigital number, since it uses as much as digits as its factorization.

265889930749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 235146240, while the sum is 70.

The spelling of 265889930749 in words is "two hundred sixty-five billion, eight hundred eighty-nine million, nine hundred thirty thousand, seven hundred forty-nine".