8020580777 has 4 divisors (see below), whose sum is σ = 8749724496. Its totient is φ = 7291437060.

The previous prime is 8020580767. The next prime is 8020580797. The reversal of 8020580777 is 7770850208.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8020580777 - 2⁸ = 8020580521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8020580707) 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, 364571843 + ... + 364571864.

It is an arithmetic number, because the mean of its divisors is an integer number (2187431124).

Almost surely, 2^8020580777 is an apocalyptic number.

It is an amenable number.

8020580777 is a deficient number, since it is larger than the sum of its proper divisors (729143719).

8020580777 is a wasteful number, since it uses less digits than its factorization.

8020580777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 729143718.

The product of its (nonzero) digits is 219520, while the sum is 44.

The square root of 8020580777 is about 89557.6952416709. The cubic root of 8020580777 is about 2001.7135961248.

The spelling of 8020580777 in words is "eight billion, twenty million, five hundred eighty thousand, seven hundred seventy-seven".