6468213957 has 4 divisors (see below), whose sum is σ = 8624285280. Its totient is φ = 4312142636.

The previous prime is 6468213943. The next prime is 6468213971. The reversal of 6468213957 is 7593128646.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (6468213943) and next prime (6468213971).

It is a cyclic number.

It is not a de Polignac number, because 6468213957 - 2¹⁵ = 6468181189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6468212957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1078035657 + ... + 1078035662.

It is an arithmetic number, because the mean of its divisors is an integer number (2156071320).

Almost surely, 2^6468213957 is an apocalyptic number.

It is an amenable number.

6468213957 is a deficient number, since it is larger than the sum of its proper divisors (2156071323).

6468213957 is a wasteful number, since it uses less digits than its factorization.

6468213957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2156071322.

The product of its digits is 2177280, while the sum is 51.

The square root of 6468213957 is about 80425.2072238549. The cubic root of 6468213957 is about 1863.2085096993.

The spelling of 6468213957 in words is "six billion, four hundred sixty-eight million, two hundred thirteen thousand, nine hundred fifty-seven".