8120895651 has 30 divisors (see below), whose sum is σ = 13238437212. Its totient is φ = 4920124680.

The previous prime is 8120895649. The next prime is 8120895667. The reversal of 8120895651 is 1565980218.

It is a happy number.

8120895651 is a `hidden beast` number, since 8 + 1 + 2 + 0 + 89 + 565 + 1 = 666.

It is not a de Polignac number, because 8120895651 - 2¹ = 8120895649 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8120895597 and 8120895606.

It is not an unprimeable number, because it can be changed into a prime (8120895151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 2688420 + ... + 2691438.

Almost surely, 2^8120895651 is an apocalyptic number.

8120895651 is a gapful number since it is divisible by the number (81) formed by its first and last digit.

8120895651 is a deficient number, since it is larger than the sum of its proper divisors (5117541561).

8120895651 is an frugal number, since it uses more digits than its factorization.

8120895651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6061 (or 3033 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 45.

The square root of 8120895651 is about 90116.0121787466. The cubic root of 8120895651 is about 2010.0243102428.

The spelling of 8120895651 in words is "eight billion, one hundred twenty million, eight hundred ninety-five thousand, six hundred fifty-one".