64364448793 has 4 divisors (see below), whose sum is σ = 64375470288. Its totient is φ = 64353427300.

The previous prime is 64364448769. The next prime is 64364448809. The reversal of 64364448793 is 39784446346.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 39784446346 = 2 ⋅19892223173.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64364448793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64364448293) 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, 5501983 + ... + 5513668.

It is an arithmetic number, because the mean of its divisors is an integer number (16093867572).

Almost surely, 2^64364448793 is an apocalyptic number.

It is an amenable number.

64364448793 is a deficient number, since it is larger than the sum of its proper divisors (11021495).

64364448793 is a wasteful number, since it uses less digits than its factorization.

64364448793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11021494.

The product of its digits is 41803776, while the sum is 58.

The spelling of 64364448793 in words is "sixty-four billion, three hundred sixty-four million, four hundred forty-eight thousand, seven hundred ninety-three".