64864610255 has 4 divisors (see below), whose sum is σ = 77837532312. Its totient is φ = 51891688200.

The previous prime is 64864610249. The next prime is 64864610267. The reversal of 64864610255 is 55201646846.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 64864610255 - 2¹⁰ = 64864609231 is a prime.

It is a Duffinian number.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 6486461021 + ... + 6486461030.

It is an arithmetic number, because the mean of its divisors is an integer number (19459383078).

Almost surely, 2^64864610255 is an apocalyptic number.

64864610255 is a deficient number, since it is larger than the sum of its proper divisors (12972922057).

64864610255 is a wasteful number, since it uses less digits than its factorization.

64864610255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12972922056.

The product of its (nonzero) digits is 1382400, while the sum is 47.

The spelling of 64864610255 in words is "sixty-four billion, eight hundred sixty-four million, six hundred ten thousand, two hundred fifty-five".