42664343999 has 4 divisors (see below), whose sum is σ = 42730903680. Its totient is φ = 42597784320.

The previous prime is 42664343983. The next prime is 42664344013. The reversal of 42664343999 is 99934346624.

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 42664343999 - 2⁴ = 42664343983 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 (42664343399) 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, 33278879 + ... + 33280160.

It is an arithmetic number, because the mean of its divisors is an integer number (10682725920).

Almost surely, 2^42664343999 is an apocalyptic number.

42664343999 is a deficient number, since it is larger than the sum of its proper divisors (66559681).

42664343999 is an equidigital number, since it uses as much as digits as its factorization.

42664343999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66559680.

The product of its digits is 30233088, while the sum is 59.

The spelling of 42664343999 in words is "forty-two billion, six hundred sixty-four million, three hundred forty-three thousand, nine hundred ninety-nine".