6427117057 has 4 divisors (see below), whose sum is σ = 6455430576. Its totient is φ = 6398803540.

The previous prime is 6427117043. The next prime is 6427117069. The reversal of 6427117057 is 7507117246.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 6427117057 - 2⁷ = 6427116929 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6427117157) 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, 14156419 + ... + 14156872.

It is an arithmetic number, because the mean of its divisors is an integer number (1613857644).

Almost surely, 2^6427117057 is an apocalyptic number.

It is an amenable number.

6427117057 is a deficient number, since it is larger than the sum of its proper divisors (28313519).

6427117057 is a wasteful number, since it uses less digits than its factorization.

6427117057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28313518.

The product of its (nonzero) digits is 82320, while the sum is 40.

The square root of 6427117057 is about 80169.3024604805. The cubic root of 6427117057 is about 1859.2540517677.

The spelling of 6427117057 in words is "six billion, four hundred twenty-seven million, one hundred seventeen thousand, fifty-seven".