6431795779 has 4 divisors (see below), whose sum is σ = 6432198480. Its totient is φ = 6431393080.

The previous prime is 6431795731. The next prime is 6431795789. The reversal of 6431795779 is 9775971346.

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 6431795779 - 2⁷ = 6431795651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6431795789) 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, 176359 + ... + 209680.

It is an arithmetic number, because the mean of its divisors is an integer number (1608049620).

Almost surely, 2^6431795779 is an apocalyptic number.

6431795779 is a deficient number, since it is larger than the sum of its proper divisors (402701).

6431795779 is a wasteful number, since it uses less digits than its factorization.

6431795779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402700.

The product of its digits is 10001880, while the sum is 58.

The square root of 6431795779 is about 80198.4774107339. The cubic root of 6431795779 is about 1859.7051001807.

The spelling of 6431795779 in words is "six billion, four hundred thirty-one million, seven hundred ninety-five thousand, seven hundred seventy-nine".