6431973899 has 16 divisors (see below), whose sum is σ = 7213511424. Its totient is φ = 5694796800.

The previous prime is 6431973893. The next prime is 6431973901. The reversal of 6431973899 is 9983791346.

It is a cyclic number.

It is not a de Polignac number, because 6431973899 - 2²⁸ = 6163538443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6431973893) 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, 25082 + ... + 116159.

It is an arithmetic number, because the mean of its divisors is an integer number (450844464).

Almost surely, 2^6431973899 is an apocalyptic number.

6431973899 is a deficient number, since it is larger than the sum of its proper divisors (781537525).

6431973899 is a wasteful number, since it uses less digits than its factorization.

6431973899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141398.

The product of its digits is 8817984, while the sum is 59.

The square root of 6431973899 is about 80199.5878979437. The cubic root of 6431973899 is about 1859.7222673725.

The spelling of 6431973899 in words is "six billion, four hundred thirty-one million, nine hundred seventy-three thousand, eight hundred ninety-nine".