64442065147 has 4 divisors (see below), whose sum is σ = 64468929600. Its totient is φ = 64415200696.

The previous prime is 64442065031. The next prime is 64442065151. The reversal of 64442065147 is 74156024446.

64442065147 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 64442065147 - 2²⁷ = 64307847419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64442066147) 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, 13428628 + ... + 13433425.

It is an arithmetic number, because the mean of its divisors is an integer number (16117232400).

Almost surely, 2^64442065147 is an apocalyptic number.

64442065147 is a deficient number, since it is larger than the sum of its proper divisors (26864453).

64442065147 is a wasteful number, since it uses less digits than its factorization.

64442065147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26864452.

The product of its (nonzero) digits is 645120, while the sum is 43.

The spelling of 64442065147 in words is "sixty-four billion, four hundred forty-two million, sixty-five thousand, one hundred forty-seven".