79381594543 has 2 divisors, whose sum is σ = 79381594544. Its totient is φ = 79381594542.

The previous prime is 79381594477. The next prime is 79381594549. The reversal of 79381594543 is 34549518397.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 79381594543 - 2⁹ = 79381594031 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79381594549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39690797271 + 39690797272.

It is an arithmetic number, because the mean of its divisors is an integer number (39690797272).

Almost surely, 2^79381594543 is an apocalyptic number.

79381594543 is a deficient number, since it is larger than the sum of its proper divisors (1).

79381594543 is an equidigital number, since it uses as much as digits as its factorization.

79381594543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16329600, while the sum is 58.

The spelling of 79381594543 in words is "seventy-nine billion, three hundred eighty-one million, five hundred ninety-four thousand, five hundred forty-three".