64476370321 has 8 divisors (see below), whose sum is σ = 70599340800. Its totient is φ = 58396980240.

The previous prime is 64476370319. The next prime is 64476370333. The reversal of 64476370321 is 12307367446.

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

It is a cyclic number.

It is not a de Polignac number, because 64476370321 - 2¹ = 64476370319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64476370391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10892001 + ... + 10897918.

It is an arithmetic number, because the mean of its divisors is an integer number (8824917600).

Almost surely, 2^64476370321 is an apocalyptic number.

It is an amenable number.

64476370321 is a deficient number, since it is larger than the sum of its proper divisors (6122970479).

64476370321 is a wasteful number, since it uses less digits than its factorization.

64476370321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21790199.

The product of its (nonzero) digits is 508032, while the sum is 43.

The spelling of 64476370321 in words is "sixty-four billion, four hundred seventy-six million, three hundred seventy thousand, three hundred twenty-one".