64444842355 has 8 divisors (see below), whose sum is σ = 77462489664. Its totient is φ = 51470088000.

The previous prime is 64444842331. The next prime is 64444842367. The reversal of 64444842355 is 55324844446.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 64444842355 - 2²³ = 64436453747 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64444842299 and 64444842308.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10719931 + ... + 10725940.

It is an arithmetic number, because the mean of its divisors is an integer number (9682811208).

Almost surely, 2^64444842355 is an apocalyptic number.

64444842355 is a deficient number, since it is larger than the sum of its proper divisors (13017647309).

64444842355 is a wasteful number, since it uses less digits than its factorization.

64444842355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21446477.

The product of its digits is 7372800, while the sum is 49.

The spelling of 64444842355 in words is "sixty-four billion, four hundred forty-four million, eight hundred forty-two thousand, three hundred fifty-five".