9980543698 has 8 divisors (see below), whose sum is σ = 15181672320. Its totient is φ = 4919986260.

The previous prime is 9980543659. The next prime is 9980543701. The reversal of 9980543698 is 8963450899.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×9980543698² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35142618 + ... + 35142901.

It is an arithmetic number, because the mean of its divisors is an integer number (1897709040).

Almost surely, 2^9980543698 is an apocalyptic number.

9980543698 is a deficient number, since it is larger than the sum of its proper divisors (5201128622).

9980543698 is a wasteful number, since it uses less digits than its factorization.

9980543698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70285592.

The product of its (nonzero) digits is 16796160, while the sum is 61.

The square root of 9980543698 is about 99902.6711254509. The cubic root of 9980543698 is about 2153.0365384785.

The spelling of 9980543698 in words is "nine billion, nine hundred eighty million, five hundred forty-three thousand, six hundred ninety-eight".