264465861865 has 16 divisors (see below), whose sum is σ = 323542978560. Its totient is φ = 207467948800.

The previous prime is 264465861839. The next prime is 264465861901. The reversal of 264465861865 is 568168564462.

It is not a de Polignac number, because 264465861865 - 2²⁹ = 263928990953 is a prime.

It is a super-2 number, since 2×264465861865² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 999529 + ... + 1236118.

It is an arithmetic number, because the mean of its divisors is an integer number (20221436160).

Almost surely, 2^264465861865 is an apocalyptic number.

It is an amenable number.

264465861865 is a deficient number, since it is larger than the sum of its proper divisors (59077116695).

264465861865 is a wasteful number, since it uses less digits than its factorization.

264465861865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2236112.

The product of its digits is 66355200, while the sum is 61.

The spelling of 264465861865 in words is "two hundred sixty-four billion, four hundred sixty-five million, eight hundred sixty-one thousand, eight hundred sixty-five".