9961834584615 has 32 divisors (see below), whose sum is σ = 15960456008640. Its totient is φ = 5305807171584.

The previous prime is 9961834584589. The next prime is 9961834584623. The reversal of 9961834584615 is 5164854381699.

It is not a de Polignac number, because 9961834584615 - 2¹⁵ = 9961834551847 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9961834584615.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 73063987 + ... + 73200203.

It is an arithmetic number, because the mean of its divisors is an integer number (498764250270).

Almost surely, 2^{9961834584615} is an apocalyptic number.

9961834584615 is a deficient number, since it is larger than the sum of its proper divisors (5998621424025).

9961834584615 is a wasteful number, since it uses less digits than its factorization.

9961834584615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142771.

The product of its digits is 223948800, while the sum is 69.

The spelling of 9961834584615 in words is "nine trillion, nine hundred sixty-one billion, eight hundred thirty-four million, five hundred eighty-four thousand, six hundred fifteen".