47171820064543 has 4 divisors (see below), whose sum is σ = 47171875460400. Its totient is φ = 47171764668688.

The previous prime is 47171820064519. The next prime is 47171820064613. The reversal of 47171820064543 is 34546002817174.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47171820064543 is a prime.

It is a super-3 number, since 3×47171820064543³ (a number of 42 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47171820064513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26400355 + ... + 28130452.

It is an arithmetic number, because the mean of its divisors is an integer number (11792968865100).

Almost surely, 2^{47171820064543} is an apocalyptic number.

47171820064543 is a deficient number, since it is larger than the sum of its proper divisors (55395857).

47171820064543 is an equidigital number, since it uses as much as digits as its factorization.

47171820064543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55395856.

The product of its (nonzero) digits is 4515840, while the sum is 52.

The spelling of 47171820064543 in words is "forty-seven trillion, one hundred seventy-one billion, eight hundred twenty million, sixty-four thousand, five hundred forty-three".