64597288993 has 4 divisors (see below), whose sum is σ = 68397129540. Its totient is φ = 60797448448.

The previous prime is 64597288991. The next prime is 64597289033. The reversal of 64597288993 is 39988279546.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17931352464 + 46665936529 = 133908^2 + 216023^2 .

It is a cyclic number.

It is not a de Polignac number, because 64597288993 - 2¹ = 64597288991 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64597288991) 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, 1899920248 + ... + 1899920281.

It is an arithmetic number, because the mean of its divisors is an integer number (17099282385).

Almost surely, 2^64597288993 is an apocalyptic number.

It is an amenable number.

64597288993 is a deficient number, since it is larger than the sum of its proper divisors (3799840547).

64597288993 is a wasteful number, since it uses less digits than its factorization.

64597288993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3799840546.

The product of its digits is 235146240, while the sum is 70.

The spelling of 64597288993 in words is "sixty-four billion, five hundred ninety-seven million, two hundred eighty-eight thousand, nine hundred ninety-three".