8120204453 has 2 divisors, whose sum is σ = 8120204454. Its totient is φ = 8120204452.

The previous prime is 8120204437. The next prime is 8120204471. The reversal of 8120204453 is 3544020218.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6314209444 + 1805995009 = 79462^2 + 42497^2 .

It is a cyclic number.

It is not a de Polignac number, because 8120204453 - 2⁴ = 8120204437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8120204413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4060102226 + 4060102227.

It is an arithmetic number, because the mean of its divisors is an integer number (4060102227).

Almost surely, 2^8120204453 is an apocalyptic number.

It is an amenable number.

8120204453 is a deficient number, since it is larger than the sum of its proper divisors (1).

8120204453 is an equidigital number, since it uses as much as digits as its factorization.

8120204453 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7680, while the sum is 29.

The square root of 8120204453 is about 90112.1770517170. The cubic root of 8120204453 is about 2009.9672818779.

The spelling of 8120204453 in words is "eight billion, one hundred twenty million, two hundred four thousand, four hundred fifty-three".