64645601315 has 8 divisors (see below), whose sum is σ = 78088462368. Its totient is φ = 51373987200.

The previous prime is 64645601309. The next prime is 64645601323. The reversal of 64645601315 is 51310654646.

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

It is not a de Polignac number, because 64645601315 - 2¹⁴ = 64645584931 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 42810902 + ... + 42812411.

It is an arithmetic number, because the mean of its divisors is an integer number (9761057796).

Almost surely, 2^64645601315 is an apocalyptic number.

64645601315 is a deficient number, since it is larger than the sum of its proper divisors (13442861053).

64645601315 is a wasteful number, since it uses less digits than its factorization.

64645601315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85623469.

The product of its (nonzero) digits is 259200, while the sum is 41.

The spelling of 64645601315 in words is "sixty-four billion, six hundred forty-five million, six hundred one thousand, three hundred fifteen".