64500985459 has 4 divisors (see below), whose sum is σ = 64511729104. Its totient is φ = 64490241816.

The previous prime is 64500985427. The next prime is 64500985463. The reversal of 64500985459 is 95458900546.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 95458900546 = 2 ⋅47729450273.

It is a cyclic number.

It is not a de Polignac number, because 64500985459 - 2⁵ = 64500985427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64500985859) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5362812 + ... + 5374825.

It is an arithmetic number, because the mean of its divisors is an integer number (16127932276).

Almost surely, 2^64500985459 is an apocalyptic number.

64500985459 is a deficient number, since it is larger than the sum of its proper divisors (10743645).

64500985459 is a wasteful number, since it uses less digits than its factorization.

64500985459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10743644.

The product of its (nonzero) digits is 7776000, while the sum is 55.

The spelling of 64500985459 in words is "sixty-four billion, five hundred million, nine hundred eighty-five thousand, four hundred fifty-nine".