2120080777 has 4 divisors (see below), whose sum is σ = 2122274176. Its totient is φ = 2117887380.

The previous prime is 2120080769. The next prime is 2120080783. The reversal of 2120080777 is 7770800212.

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 2120080777 - 2³ = 2120080769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2120086777) 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, 1095249 + ... + 1097182.

It is an arithmetic number, because the mean of its divisors is an integer number (530568544).

Almost surely, 2^2120080777 is an apocalyptic number.

It is an amenable number.

2120080777 is a deficient number, since it is larger than the sum of its proper divisors (2193399).

2120080777 is an equidigital number, since it uses as much as digits as its factorization.

2120080777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2193398.

The product of its (nonzero) digits is 10976, while the sum is 34.

The square root of 2120080777 is about 46044.3349066962. The cubic root of 2120080777 is about 1284.6479733372.

Adding to 2120080777 its reverse (7770800212), we get a palindrome (9890880989).

The spelling of 2120080777 in words is "two billion, one hundred twenty million, eighty thousand, seven hundred seventy-seven".