64814625055 has 4 divisors (see below), whose sum is σ = 77777550072. Its totient is φ = 51851700040.

The previous prime is 64814625047. The next prime is 64814625077. The reversal of 64814625055 is 55052641846.

64814625055 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 64814625055 - 2³ = 64814625047 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64814624996 and 64814625014.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6481462501 + ... + 6481462510.

It is an arithmetic number, because the mean of its divisors is an integer number (19444387518).

Almost surely, 2^64814625055 is an apocalyptic number.

64814625055 is a deficient number, since it is larger than the sum of its proper divisors (12962925017).

64814625055 is a wasteful number, since it uses less digits than its factorization.

64814625055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12962925016.

The product of its (nonzero) digits is 1152000, while the sum is 46.

The spelling of 64814625055 in words is "sixty-four billion, eight hundred fourteen million, six hundred twenty-five thousand, fifty-five".