84272239787471 has 2 divisors, whose sum is σ = 84272239787472. Its totient is φ = 84272239787470.

The previous prime is 84272239787441. The next prime is 84272239787509. The reversal of 84272239787471 is 17478793227248.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 84272239787471 - 2³⁴ = 84255059918287 is a prime.

It is a super-3 number, since 3×84272239787471³ (a number of 43 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 84272239787395 and 84272239787404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84272239787441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42136119893735 + 42136119893736.

It is an arithmetic number, because the mean of its divisors is an integer number (42136119893736).

Almost surely, 2^{84272239787471} is an apocalyptic number.

84272239787471 is a deficient number, since it is larger than the sum of its proper divisors (1).

84272239787471 is an equidigital number, since it uses as much as digits as its factorization.

84272239787471 is an evil number, because the sum of its binary digits is even.

The product of its digits is 531062784, while the sum is 71.

The spelling of 84272239787471 in words is "eighty-four trillion, two hundred seventy-two billion, two hundred thirty-nine million, seven hundred eighty-seven thousand, four hundred seventy-one".