6400433315 has 4 divisors (see below), whose sum is σ = 7680519984. Its totient is φ = 5120346648.

The previous prime is 6400433293. The next prime is 6400433323. The reversal of 6400433315 is 5133340046.

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

It is a cyclic number.

It is not a de Polignac number, because 6400433315 - 2⁶ = 6400433251 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 640043327 + ... + 640043336.

It is an arithmetic number, because the mean of its divisors is an integer number (1920129996).

Almost surely, 2^6400433315 is an apocalyptic number.

6400433315 is a deficient number, since it is larger than the sum of its proper divisors (1280086669).

6400433315 is a wasteful number, since it uses less digits than its factorization.

6400433315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1280086668.

The product of its (nonzero) digits is 12960, while the sum is 29.

The square root of 6400433315 is about 80002.7081729112. The cubic root of 6400433315 is about 1856.6774339592.

The spelling of 6400433315 in words is "six billion, four hundred million, four hundred thirty-three thousand, three hundred fifteen".