8220475513 has 2 divisors, whose sum is σ = 8220475514. Its totient is φ = 8220475512.

The previous prime is 8220475489. The next prime is 8220475519. The reversal of 8220475513 is 3155740228.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8162761104 + 57714409 = 90348^2 + 7597^2 .

It is a cyclic number.

It is not a de Polignac number, because 8220475513 - 2²⁹ = 7683604601 is a prime.

It is a super-2 number, since 2×8220475513² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (8220475519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4110237756 + 4110237757.

It is an arithmetic number, because the mean of its divisors is an integer number (4110237757).

Almost surely, 2^8220475513 is an apocalyptic number.

It is an amenable number.

8220475513 is a deficient number, since it is larger than the sum of its proper divisors (1).

8220475513 is an equidigital number, since it uses as much as digits as its factorization.

8220475513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 67200, while the sum is 37.

The square root of 8220475513 is about 90666.8380004509. The cubic root of 8220475513 is about 2018.2067142578.

The spelling of 8220475513 in words is "eight billion, two hundred twenty million, four hundred seventy-five thousand, five hundred thirteen".