8213072136473 has 2 divisors, whose sum is σ = 8213072136474. Its totient is φ = 8213072136472.

The previous prime is 8213072136433. The next prime is 8213072136481. The reversal of 8213072136473 is 3746312703128.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7988469126544 + 224603009929 = 2826388^2 + 473923^2 .

It is a cyclic number.

It is not a de Polignac number, because 8213072136473 - 2²⁸ = 8212803701017 is a prime.

It is not a weakly prime, because it can be changed into another prime (8213072136433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4106536068236 + 4106536068237.

It is an arithmetic number, because the mean of its divisors is an integer number (4106536068237).

Almost surely, 2^{8213072136473} is an apocalyptic number.

It is an amenable number.

8213072136473 is a deficient number, since it is larger than the sum of its proper divisors (1).

8213072136473 is an equidigital number, since it uses as much as digits as its factorization.

8213072136473 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1016064, while the sum is 47.

The spelling of 8213072136473 in words is "eight trillion, two hundred thirteen billion, seventy-two million, one hundred thirty-six thousand, four hundred seventy-three".