6426223791 has 32 divisors (see below), whose sum is σ = 9447603648. Its totient is φ = 3861181440.

The previous prime is 6426223787. The next prime is 6426223829. The reversal of 6426223791 is 1973226246.

It is not a de Polignac number, because 6426223791 - 2² = 6426223787 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6426223691) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 316065 + ... + 335781.

It is an arithmetic number, because the mean of its divisors is an integer number (295237614).

Almost surely, 2^6426223791 is an apocalyptic number.

6426223791 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

6426223791 is a deficient number, since it is larger than the sum of its proper divisors (3021379857).

6426223791 is a wasteful number, since it uses less digits than its factorization.

6426223791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19931.

The product of its digits is 217728, while the sum is 42.

The square root of 6426223791 is about 80163.7311444521. The cubic root of 6426223791 is about 1859.1679122974.

The spelling of 6426223791 in words is "six billion, four hundred twenty-six million, two hundred twenty-three thousand, seven hundred ninety-one".