64620317159 has 8 divisors (see below), whose sum is σ = 68461025040. Its totient is φ = 60783999616.

The previous prime is 64620317143. The next prime is 64620317173. The reversal of 64620317159 is 95171302646.

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 64620317159 - 2⁴ = 64620317143 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64620317059) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1067249 + ... + 1126170.

It is an arithmetic number, because the mean of its divisors is an integer number (8557628130).

Almost surely, 2^64620317159 is an apocalyptic number.

64620317159 is a deficient number, since it is larger than the sum of its proper divisors (3840707881).

64620317159 is a wasteful number, since it uses less digits than its factorization.

64620317159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2195169.

The product of its (nonzero) digits is 272160, while the sum is 44.

The spelling of 64620317159 in words is "sixty-four billion, six hundred twenty million, three hundred seventeen thousand, one hundred fifty-nine".