8057641978543 has 4 divisors (see below), whose sum is σ = 8080086664080. Its totient is φ = 8035197293008.

The previous prime is 8057641978517. The next prime is 8057641978549. The reversal of 8057641978543 is 3458791467508.

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

It is a cyclic number.

It is not a de Polignac number, because 8057641978543 - 2¹³ = 8057641970351 is a prime.

It is a Smith number, since the sum of its digits (67) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8057641978549) 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, 11222342230 + ... + 11222342947.

It is an arithmetic number, because the mean of its divisors is an integer number (2020021666020).

Almost surely, 2^{8057641978543} is an apocalyptic number.

8057641978543 is a deficient number, since it is larger than the sum of its proper divisors (22444685537).

8057641978543 is a wasteful number, since it uses less digits than its factorization.

8057641978543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22444685536.

The product of its (nonzero) digits is 203212800, while the sum is 67.

The spelling of 8057641978543 in words is "eight trillion, fifty-seven billion, six hundred forty-one million, nine hundred seventy-eight thousand, five hundred forty-three".