8100215873 has 2 divisors, whose sum is σ = 8100215874. Its totient is φ = 8100215872.

The previous prime is 8100215843. The next prime is 8100215887. The reversal of 8100215873 is 3785120018.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8015262784 + 84953089 = 89528^2 + 9217^2 .

It is a cyclic number.

It is not a de Polignac number, because 8100215873 - 2¹⁴ = 8100199489 is a prime.

It is a super-2 number, since 2×8100215873² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (8100215843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4050107936 + 4050107937.

It is an arithmetic number, because the mean of its divisors is an integer number (4050107937).

Almost surely, 2^8100215873 is an apocalyptic number.

It is an amenable number.

8100215873 is a deficient number, since it is larger than the sum of its proper divisors (1).

8100215873 is an equidigital number, since it uses as much as digits as its factorization.

8100215873 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13440, while the sum is 35.

The square root of 8100215873 is about 90001.1992864540. The cubic root of 8100215873 is about 2008.3166911373.

The spelling of 8100215873 in words is "eight billion, one hundred million, two hundred fifteen thousand, eight hundred seventy-three".