64578855883 has 4 divisors (see below), whose sum is σ = 64594195848. Its totient is φ = 64563515920.

The previous prime is 64578855839. The next prime is 64578855899. The reversal of 64578855883 is 38855887546.

64578855883 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 a cyclic number.

It is not a de Polignac number, because 64578855883 - 2²¹ = 64576758731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64578853883) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7663666 + ... + 7672087.

It is an arithmetic number, because the mean of its divisors is an integer number (16148548962).

Almost surely, 2^64578855883 is an apocalyptic number.

64578855883 is a deficient number, since it is larger than the sum of its proper divisors (15339965).

64578855883 is a wasteful number, since it uses less digits than its factorization.

64578855883 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15339964.

The product of its digits is 258048000, while the sum is 67.

The spelling of 64578855883 in words is "sixty-four billion, five hundred seventy-eight million, eight hundred fifty-five thousand, eight hundred eighty-three".