6430423257 has 48 divisors (see below), whose sum is σ = 9824068800. Its totient is φ = 4047388800.

The previous prime is 6430423253. The next prime is 6430423267. The reversal of 6430423257 is 7523240346.

6430423257 is a `hidden beast` number, since 643 + 0 + 4 + 2 + 3 + 2 + 5 + 7 = 666.

It is not a de Polignac number, because 6430423257 - 2² = 6430423253 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6430423253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2186494 + ... + 2189432.

It is an arithmetic number, because the mean of its divisors is an integer number (204668100).

Almost surely, 2^6430423257 is an apocalyptic number.

It is an amenable number.

6430423257 is a deficient number, since it is larger than the sum of its proper divisors (3393645543).

6430423257 is a wasteful number, since it uses less digits than its factorization.

6430423257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3158 (or 3155 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 36.

The square root of 6430423257 is about 80189.9199213966. The cubic root of 6430423257 is about 1859.5728059850.

The spelling of 6430423257 in words is "six billion, four hundred thirty million, four hundred twenty-three thousand, two hundred fifty-seven".