8120658911 has 4 divisors (see below), whose sum is σ = 8121832800. Its totient is φ = 8119485024.

The previous prime is 8120658893. The next prime is 8120658979. The reversal of 8120658911 is 1198560218.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1198560218 = 2 ⋅599280109.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8120658911 is a prime.

It is a super-2 number, since 2×8120658911² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8120628911) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 576506 + ... + 590423.

It is an arithmetic number, because the mean of its divisors is an integer number (2030458200).

Almost surely, 2^8120658911 is an apocalyptic number.

8120658911 is a deficient number, since it is larger than the sum of its proper divisors (1173889).

8120658911 is a wasteful number, since it uses less digits than its factorization.

8120658911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1173888.

The product of its (nonzero) digits is 34560, while the sum is 41.

The square root of 8120658911 is about 90114.6986401220. The cubic root of 8120658911 is about 2010.0047780057.

The spelling of 8120658911 in words is "eight billion, one hundred twenty million, six hundred fifty-eight thousand, nine hundred eleven".