265166503153 has 2 divisors, whose sum is σ = 265166503154. Its totient is φ = 265166503152.

The previous prime is 265166503127. The next prime is 265166503187. The reversal of 265166503153 is 351305661562.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 169111757824 + 96054745329 = 411232^2 + 309927^2 .

It is a cyclic number.

It is not a de Polignac number, because 265166503153 - 2⁹ = 265166502641 is a prime.

It is not a weakly prime, because it can be changed into another prime (265166503103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132583251576 + 132583251577.

It is an arithmetic number, because the mean of its divisors is an integer number (132583251577).

Almost surely, 2^265166503153 is an apocalyptic number.

It is an amenable number.

265166503153 is a deficient number, since it is larger than the sum of its proper divisors (1).

265166503153 is an equidigital number, since it uses as much as digits as its factorization.

265166503153 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 486000, while the sum is 43.

The spelling of 265166503153 in words is "two hundred sixty-five billion, one hundred sixty-six million, five hundred three thousand, one hundred fifty-three".