64399006343 has 16 divisors (see below), whose sum is σ = 74282826816. Its totient is φ = 54686607360.

The previous prime is 64399006291. The next prime is 64399006361. The reversal of 64399006343 is 34360099346.

It is a happy number.

It is not a de Polignac number, because 64399006343 - 2³⁴ = 47219137159 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64399006363) 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, 1914155 + ... + 1947507.

It is an arithmetic number, because the mean of its divisors is an integer number (4642676676).

Almost surely, 2^64399006343 is an apocalyptic number.

64399006343 is a deficient number, since it is larger than the sum of its proper divisors (9883820473).

64399006343 is a wasteful number, since it uses less digits than its factorization.

64399006343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35914.

The product of its (nonzero) digits is 1259712, while the sum is 47.

The spelling of 64399006343 in words is "sixty-four billion, three hundred ninety-nine million, six thousand, three hundred forty-three".