265645651012477 has 2 divisors, whose sum is σ = 265645651012478. Its totient is φ = 265645651012476.

The previous prime is 265645651012349. The next prime is 265645651012513. The reversal of 265645651012477 is 774210156546562.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 156789940653241 + 108855710359236 = 12521579^2 + 10433394^2 .

It is a cyclic number.

It is not a de Polignac number, because 265645651012477 - 2⁷ = 265645651012349 is a prime.

It is a super-2 number, since 2×265645651012477² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (265645651112477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132822825506238 + 132822825506239.

It is an arithmetic number, because the mean of its divisors is an integer number (132822825506239).

Almost surely, 2^{265645651012477} is an apocalyptic number.

It is an amenable number.

265645651012477 is a deficient number, since it is larger than the sum of its proper divisors (1).

265645651012477 is an equidigital number, since it uses as much as digits as its factorization.

265645651012477 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84672000, while the sum is 61.

The spelling of 265645651012477 in words is "two hundred sixty-five trillion, six hundred forty-five billion, six hundred fifty-one million, twelve thousand, four hundred seventy-seven".