64520607317047 has 6 divisors (see below), whose sum is σ = 75054584021928. Its totient is φ = 55303377700284.

The previous prime is 64520607317027. The next prime is 64520607317071. The reversal of 64520607317047 is 74071370602546.

It is not a de Polignac number, because 64520607317047 - 2¹⁵ = 64520607284279 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 64520607316985 and 64520607317003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64520607317027) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 658373544003 + ... + 658373544100.

It is an arithmetic number, because the mean of its divisors is an integer number (12509097336988).

Almost surely, 2^{64520607317047} is an apocalyptic number.

64520607317047 is a deficient number, since it is larger than the sum of its proper divisors (10533976704881).

64520607317047 is a wasteful number, since it uses less digits than its factorization.

64520607317047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1316747088117 (or 1316747088110 counting only the distinct ones).

The product of its (nonzero) digits is 5927040, while the sum is 52.

The spelling of 64520607317047 in words is "sixty-four trillion, five hundred twenty billion, six hundred seven million, three hundred seventeen thousand, forty-seven".