6516839742 has 32 divisors (see below), whose sum is σ = 14902301184. Its totient is φ = 1861120800.

The previous prime is 6516839741. The next prime is 6516839761. The reversal of 6516839742 is 2479386156.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6516839741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63492 + ... + 130632.

It is an arithmetic number, because the mean of its divisors is an integer number (465696912).

Almost surely, 2^6516839742 is an apocalyptic number.

6516839742 is an abundant number, since it is smaller than the sum of its proper divisors (8385461442).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6516839742 is a wasteful number, since it uses less digits than its factorization.

6516839742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69464.

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

The square root of 6516839742 is about 80726.9455758113. The cubic root of 6516839742 is about 1867.8658431058.

The spelling of 6516839742 in words is "six billion, five hundred sixteen million, eight hundred thirty-nine thousand, seven hundred forty-two".