64855754265 has 32 divisors (see below), whose sum is σ = 108772304256. Its totient is φ = 32961277440.

The previous prime is 64855754261. The next prime is 64855754291. The reversal of 64855754265 is 56245755846.

It is not a de Polignac number, because 64855754265 - 2² = 64855754261 is a prime.

It is a super-2 number, since 2×64855754265² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64855754261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1199794 + ... + 1252683.

It is an arithmetic number, because the mean of its divisors is an integer number (3399134508).

Almost surely, 2^64855754265 is an apocalyptic number.

It is an amenable number.

64855754265 is a deficient number, since it is larger than the sum of its proper divisors (43916549991).

64855754265 is a wasteful number, since it uses less digits than its factorization.

64855754265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2452569.

The product of its digits is 40320000, while the sum is 57.

The spelling of 64855754265 in words is "sixty-four billion, eight hundred fifty-five million, seven hundred fifty-four thousand, two hundred sixty-five".