72871394423 has 2 divisors, whose sum is σ = 72871394424. Its totient is φ = 72871394422.

The previous prime is 72871394417. The next prime is 72871394441. The reversal of 72871394423 is 32449317827.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72871394423 - 2¹⁴ = 72871378039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72871394923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36435697211 + 36435697212.

It is an arithmetic number, because the mean of its divisors is an integer number (36435697212).

Almost surely, 2^72871394423 is an apocalyptic number.

72871394423 is a deficient number, since it is larger than the sum of its proper divisors (1).

72871394423 is an equidigital number, since it uses as much as digits as its factorization.

72871394423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2032128, while the sum is 50.

The spelling of 72871394423 in words is "seventy-two billion, eight hundred seventy-one million, three hundred ninety-four thousand, four hundred twenty-three".