64043352399 has 16 divisors (see below), whose sum is σ = 91964224352. Its totient is φ = 39409348608.

The previous prime is 64043352343. The next prime is 64043352431. The reversal of 64043352399 is 99325334046.

It is not a de Polignac number, because 64043352399 - 2¹⁷ = 64043221327 is a prime.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64043359399) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1545519 + ... + 1586415.

It is an arithmetic number, because the mean of its divisors is an integer number (5747764022).

Almost surely, 2^64043352399 is an apocalyptic number.

64043352399 is a deficient number, since it is larger than the sum of its proper divisors (27920871953).

64043352399 is a wasteful number, since it uses less digits than its factorization.

64043352399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81066.

The product of its (nonzero) digits is 2099520, while the sum is 48.

The spelling of 64043352399 in words is "sixty-four billion, forty-three million, three hundred fifty-two thousand, three hundred ninety-nine".