6557357979 has 24 divisors (see below), whose sum is σ = 9627967440. Its totient is φ = 4299930432.

The previous prime is 6557357977. The next prime is 6557357993. The reversal of 6557357979 is 9797537556.

6557357979 is a `hidden beast` number, since 6 + 5 + 57 + 3 + 579 + 7 + 9 = 666.

It is not a de Polignac number, because 6557357979 - 2¹ = 6557357977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6557357977) 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 23 ways as a sum of consecutive naturals, for example, 151897 + ... + 190229.

It is an arithmetic number, because the mean of its divisors is an integer number (401165310).

Almost surely, 2^6557357979 is an apocalyptic number.

6557357979 is a deficient number, since it is larger than the sum of its proper divisors (3070609461).

6557357979 is a wasteful number, since it uses less digits than its factorization.

6557357979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38651 (or 38648 counting only the distinct ones).

The product of its digits is 62511750, while the sum is 63.

The square root of 6557357979 is about 80977.5152681286. The cubic root of 6557357979 is about 1871.7289793311.

The spelling of 6557357979 in words is "six billion, five hundred fifty-seven million, three hundred fifty-seven thousand, nine hundred seventy-nine".