2020561777 has 8 divisors (see below), whose sum is σ = 2177521920. Its totient is φ = 1863820560.

The previous prime is 2020561759. The next prime is 2020561801. The reversal of 2020561777 is 7771650202.

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

It is a cyclic number.

It is not a de Polignac number, because 2020561777 - 2²⁷ = 1886344049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2020561757) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35299 + ... + 72712.

It is an arithmetic number, because the mean of its divisors is an integer number (272190240).

Almost surely, 2^2020561777 is an apocalyptic number.

It is an amenable number.

2020561777 is a deficient number, since it is larger than the sum of its proper divisors (156960143).

2020561777 is a wasteful number, since it uses less digits than its factorization.

2020561777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109463.

The product of its (nonzero) digits is 41160, while the sum is 37.

The square root of 2020561777 is about 44950.6593611262. The cubic root of 2020561777 is about 1264.2240398369.

The spelling of 2020561777 in words is "two billion, twenty million, five hundred sixty-one thousand, seven hundred seventy-seven".