6658257842 has 32 divisors (see below), whose sum is σ = 11071468800. Its totient is φ = 2988767488.

The previous prime is 6658257839. The next prime is 6658257847. The reversal of 6658257842 is 2487528566.

It is not an unprimeable number, because it can be changed into a prime (6658257847) 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 15 ways as a sum of consecutive naturals, for example, 41159 + ... + 122517.

It is an arithmetic number, because the mean of its divisors is an integer number (345983400).

Almost surely, 2^6658257842 is an apocalyptic number.

6658257842 is a deficient number, since it is larger than the sum of its proper divisors (4413210958).

6658257842 is a wasteful number, since it uses less digits than its factorization.

6658257842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81490.

The product of its digits is 6451200, while the sum is 53.

The square root of 6658257842 is about 81598.1485206619. The cubic root of 6658257842 is about 1881.2804241361.

The spelling of 6658257842 in words is "six billion, six hundred fifty-eight million, two hundred fifty-seven thousand, eight hundred forty-two".