64982746529 has 8 divisors (see below), whose sum is σ = 65463945960. Its totient is φ = 64501646976.

The previous prime is 64982746511. The next prime is 64982746559. The reversal of 64982746529 is 92564728946.

It can be written as a sum of positive squares in 4 ways, for example, as 10910220304 + 54072526225 = 104452^2 + 232535^2 .

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 64982746529 - 2⁸ = 64982746273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64982746559) 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, 1739087 + ... + 1776059.

It is an arithmetic number, because the mean of its divisors is an integer number (8182993245).

Almost surely, 2^64982746529 is an apocalyptic number.

It is an amenable number.

64982746529 is a deficient number, since it is larger than the sum of its proper divisors (481199431).

64982746529 is a wasteful number, since it uses less digits than its factorization.

64982746529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49939.

The product of its digits is 52254720, while the sum is 62.

The spelling of 64982746529 in words is "sixty-four billion, nine hundred eighty-two million, seven hundred forty-six thousand, five hundred twenty-nine".