64596399394 has 4 divisors (see below), whose sum is σ = 96894599094. Its totient is φ = 32298199696.

The previous prime is 64596399377. The next prime is 64596399401. The reversal of 64596399394 is 49399369546.

64596399394 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 49399369546 = 2 ⋅24699684773.

It can be written as a sum of positive squares in only one way, i.e., 60031370169 + 4565029225 = 245013^2 + 67565^2 .

It is a Smith number, since the sum of its digits (67) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16149099847 + ... + 16149099850.

Almost surely, 2^64596399394 is an apocalyptic number.

64596399394 is a deficient number, since it is larger than the sum of its proper divisors (32298199700).

64596399394 is a wasteful number, since it uses less digits than its factorization.

64596399394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32298199699.

The product of its digits is 170061120, while the sum is 67.

The spelling of 64596399394 in words is "sixty-four billion, five hundred ninety-six million, three hundred ninety-nine thousand, three hundred ninety-four".