6391132823 has 2 divisors, whose sum is σ = 6391132824. Its totient is φ = 6391132822.

The previous prime is 6391132817. The next prime is 6391132831. The reversal of 6391132823 is 3282311936.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6391132823 - 2⁴ = 6391132807 is a prime.

It is a super-2 number, since 2×6391132823² = 81693157522455898658, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6391132523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3195566411 + 3195566412.

It is an arithmetic number, because the mean of its divisors is an integer number (3195566412).

Almost surely, 2^6391132823 is an apocalyptic number.

6391132823 is a deficient number, since it is larger than the sum of its proper divisors (1).

6391132823 is an equidigital number, since it uses as much as digits as its factorization.

6391132823 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46656, while the sum is 38.

The square root of 6391132823 is about 79944.5609344376. The cubic root of 6391132823 is about 1855.7776831871. Note that the first 3 decimals are identical.

The spelling of 6391132823 in words is "six billion, three hundred ninety-one million, one hundred thirty-two thousand, eight hundred twenty-three".