2077130777 has 4 divisors (see below), whose sum is σ = 2077323060. Its totient is φ = 2076938496.

The previous prime is 2077130761. The next prime is 2077130779. The reversal of 2077130777 is 7770317702.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 490223881 + 1586906896 = 22141^2 + 39836^2 .

It is a cyclic number.

It is not a de Polignac number, because 2077130777 - 2⁴ = 2077130761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2077130779) 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, 78908 + ... + 101885.

It is an arithmetic number, because the mean of its divisors is an integer number (519330765).

Almost surely, 2^2077130777 is an apocalyptic number.

It is an amenable number.

2077130777 is a deficient number, since it is larger than the sum of its proper divisors (192283).

2077130777 is a wasteful number, since it uses less digits than its factorization.

2077130777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192282.

The product of its (nonzero) digits is 100842, while the sum is 41.

The square root of 2077130777 is about 45575.5502106118. The cubic root of 2077130777 is about 1275.9136400592.

The spelling of 2077130777 in words is "two billion, seventy-seven million, one hundred thirty thousand, seven hundred seventy-seven".