8120564377 has 8 divisors (see below), whose sum is σ = 8133444000. Its totient is φ = 8107697664.

The previous prime is 8120564363. The next prime is 8120564399. The reversal of 8120564377 is 7734650218.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8120564377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8120564477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2459874 + ... + 2463172.

It is an arithmetic number, because the mean of its divisors is an integer number (1016680500).

Almost surely, 2^8120564377 is an apocalyptic number.

It is an amenable number.

8120564377 is a deficient number, since it is larger than the sum of its proper divisors (12879623).

8120564377 is a wasteful number, since it uses less digits than its factorization.

8120564377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6455.

The product of its (nonzero) digits is 282240, while the sum is 43.

The square root of 8120564377 is about 90114.1741181708. The cubic root of 8120564377 is about 2009.9969783706.

The spelling of 8120564377 in words is "eight billion, one hundred twenty million, five hundred sixty-four thousand, three hundred seventy-seven".