265140450420545 has 32 divisors (see below), whose sum is σ = 371076142809600. Its totient is φ = 178116548037120.

The previous prime is 265140450420523. The next prime is 265140450420551. The reversal of 265140450420545 is 545024054041562.

It is not a de Polignac number, because 265140450420545 - 2¹² = 265140450416449 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 265140450420545.

It is an unprimeable number.

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, 347851421 + ... + 348612810.

It is an arithmetic number, because the mean of its divisors is an integer number (11596129462800).

Almost surely, 2^{265140450420545} is an apocalyptic number.

It is an amenable number.

265140450420545 is a deficient number, since it is larger than the sum of its proper divisors (105935692389055).

265140450420545 is a wasteful number, since it uses less digits than its factorization.

265140450420545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 696464465.

The product of its (nonzero) digits is 3840000, while the sum is 47.

The spelling of 265140450420545 in words is "two hundred sixty-five trillion, one hundred forty billion, four hundred fifty million, four hundred twenty thousand, five hundred forty-five".