9809860005543 has 32 divisors (see below), whose sum is σ = 14540990636032. Its totient is φ = 5841838195200.

The previous prime is 9809860005521. The next prime is 9809860005623. The reversal of 9809860005543 is 3455000689089.

It is not a de Polignac number, because 9809860005543 - 2⁸ = 9809860005287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9809860005443) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28673058 + ... + 29013168.

It is an arithmetic number, because the mean of its divisors is an integer number (454405957376).

Almost surely, 2^{9809860005543} is an apocalyptic number.

9809860005543 is a gapful number since it is divisible by the number (93) formed by its first and last digit.

9809860005543 is a deficient number, since it is larger than the sum of its proper divisors (4731130630489).

9809860005543 is a wasteful number, since it uses less digits than its factorization.

9809860005543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364015.

The product of its (nonzero) digits is 9331200, while the sum is 57.

The spelling of 9809860005543 in words is "nine trillion, eight hundred nine billion, eight hundred sixty million, five thousand, five hundred forty-three".