84889736513 has 2 divisors, whose sum is σ = 84889736514. Its totient is φ = 84889736512.

The previous prime is 84889736501. The next prime is 84889736527. The reversal of 84889736513 is 31563798848.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63035140624 + 21854595889 = 251068^2 + 147833^2 .

It is a cyclic number.

It is not a de Polignac number, because 84889736513 - 2²⁶ = 84822627649 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (84889736543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42444868256 + 42444868257.

It is an arithmetic number, because the mean of its divisors is an integer number (42444868257).

Almost surely, 2^84889736513 is an apocalyptic number.

It is an amenable number.

84889736513 is a deficient number, since it is larger than the sum of its proper divisors (1).

84889736513 is an equidigital number, since it uses as much as digits as its factorization.

84889736513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34836480, while the sum is 62.

The spelling of 84889736513 in words is "eighty-four billion, eight hundred eighty-nine million, seven hundred thirty-six thousand, five hundred thirteen".