6517631659 has 48 divisors (see below), whose sum is σ = 8616036096. Its totient is φ = 4870756800.

The previous prime is 6517631657. The next prime is 6517631671. The reversal of 6517631659 is 9561367156.

It is not a de Polignac number, because 6517631659 - 2¹ = 6517631657 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6517631657) 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 47 ways as a sum of consecutive naturals, for example, 1413652 + ... + 1418254.

It is an arithmetic number, because the mean of its divisors is an integer number (179500752).

Almost surely, 2^6517631659 is an apocalyptic number.

6517631659 is a deficient number, since it is larger than the sum of its proper divisors (2098404437).

6517631659 is a wasteful number, since it uses less digits than its factorization.

6517631659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4736 (or 4729 counting only the distinct ones).

The product of its digits is 1020600, while the sum is 49.

The square root of 6517631659 is about 80731.8503380172. The cubic root of 6517631659 is about 1867.9415001656.

The spelling of 6517631659 in words is "six billion, five hundred seventeen million, six hundred thirty-one thousand, six hundred fifty-nine".