265140646404465 has 32 divisors (see below), whose sum is σ = 456914224763136. Its totient is φ = 130514638176000.

The previous prime is 265140646404461. The next prime is 265140646404539. The reversal of 265140646404465 is 564404646041562.

It is not a de Polignac number, because 265140646404465 - 2² = 265140646404461 is a prime.

It is not an unprimeable number, because it can be changed into a prime (265140646404461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 82489786 + ... + 85643715.

It is an arithmetic number, because the mean of its divisors is an integer number (14278569523848).

Almost surely, 2^{265140646404465} is an apocalyptic number.

It is an amenable number.

265140646404465 is a deficient number, since it is larger than the sum of its proper divisors (191773578358671).

265140646404465 is a wasteful number, since it uses less digits than its factorization.

265140646404465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168141609.

The product of its (nonzero) digits is 66355200, while the sum is 57.

The spelling of 265140646404465 in words is "two hundred sixty-five trillion, one hundred forty billion, six hundred forty-six million, four hundred four thousand, four hundred sixty-five".