64245456323615 has 8 divisors (see below), whose sum is σ = 88108054386720. Its totient is φ = 44054027193312.

The previous prime is 64245456323579. The next prime is 64245456323663. The reversal of 64245456323615 is 51632365454246.

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 64245456323615 - 2²⁰ = 64245455275039 is a prime.

It is a congruent number.

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, 917792233160 + ... + 917792233229.

It is an arithmetic number, because the mean of its divisors is an integer number (11013506798340).

Almost surely, 2^{64245456323615} is an apocalyptic number.

64245456323615 is a deficient number, since it is larger than the sum of its proper divisors (23862598063105).

64245456323615 is a wasteful number, since it uses less digits than its factorization.

64245456323615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1835584466401.

The product of its digits is 62208000, while the sum is 56.

The spelling of 64245456323615 in words is "sixty-four trillion, two hundred forty-five billion, four hundred fifty-six million, three hundred twenty-three thousand, six hundred fifteen".