202216179361813 has 2 divisors, whose sum is σ = 202216179361814. Its totient is φ = 202216179361812.

The previous prime is 202216179361769. The next prime is 202216179361849. The reversal of 202216179361813 is 318163971612202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 107342384620689 + 94873794741124 = 10360617^2 + 9740318^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-202216179361813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202216179361513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101108089680906 + 101108089680907.

It is an arithmetic number, because the mean of its divisors is an integer number (101108089680907).

Almost surely, 2^{202216179361813} is an apocalyptic number.

It is an amenable number.

202216179361813 is a deficient number, since it is larger than the sum of its proper divisors (1).

202216179361813 is an equidigital number, since it uses as much as digits as its factorization.

202216179361813 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1306368, while the sum is 52.

The spelling of 202216179361813 in words is "two hundred two trillion, two hundred sixteen billion, one hundred seventy-nine million, three hundred sixty-one thousand, eight hundred thirteen".