84570099539729 has 2 divisors, whose sum is σ = 84570099539730. Its totient is φ = 84570099539728.

The previous prime is 84570099539711. The next prime is 84570099539741. The reversal of 84570099539729 is 92793599007548.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82974609721600 + 1595489818129 = 9109040^2 + 1263127^2 .

It is a cyclic number.

It is not a de Polignac number, because 84570099539729 - 2¹⁶ = 84570099474193 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 84570099539729.

It is not a weakly prime, because it can be changed into another prime (84570099532729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42285049769864 + 42285049769865.

It is an arithmetic number, because the mean of its divisors is an integer number (42285049769865).

Almost surely, 2^{84570099539729} is an apocalyptic number.

It is an amenable number.

84570099539729 is a deficient number, since it is larger than the sum of its proper divisors (1).

84570099539729 is an equidigital number, since it uses as much as digits as its factorization.

84570099539729 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1543147200, while the sum is 77.

The spelling of 84570099539729 in words is "eighty-four trillion, five hundred seventy billion, ninety-nine million, five hundred thirty-nine thousand, seven hundred twenty-nine".