64520607317003 has 8 divisors (see below), whose sum is σ = 67948299481920. Its totient is φ = 61096102224840.

The previous prime is 64520607316999. The next prime is 64520607317021. The reversal of 64520607317003 is 30071370602546.

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 64520607317003 - 2² = 64520607316999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64520607316003) 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, 796726625 + ... + 796807602.

It is an arithmetic number, because the mean of its divisors is an integer number (8493537435240).

Almost surely, 2^{64520607317003} is an apocalyptic number.

64520607317003 is a deficient number, since it is larger than the sum of its proper divisors (3427692164917).

64520607317003 is a wasteful number, since it uses less digits than its factorization.

64520607317003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1593536377.

The product of its (nonzero) digits is 635040, while the sum is 44.

Adding to 64520607317003 its reverse (30071370602546), we get a palindrome (94591977919549).

The spelling of 64520607317003 in words is "sixty-four trillion, five hundred twenty billion, six hundred seven million, three hundred seventeen thousand, three".