2061756777 has 8 divisors (see below), whose sum is σ = 2868531264. Its totient is φ = 1314743408.

The previous prime is 2061756761. The next prime is 2061756797. The reversal of 2061756777 is 7776571602.

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 2061756777 - 2⁴ = 2061756761 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2061756797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14940198 + ... + 14940335.

It is an arithmetic number, because the mean of its divisors is an integer number (358566408).

Almost surely, 2^2061756777 is an apocalyptic number.

It is an amenable number.

2061756777 is a deficient number, since it is larger than the sum of its proper divisors (806774487).

2061756777 is a wasteful number, since it uses less digits than its factorization.

2061756777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29880559.

The product of its (nonzero) digits is 864360, while the sum is 48.

The square root of 2061756777 is about 45406.5719582529. The cubic root of 2061756777 is about 1272.7579260068.

The spelling of 2061756777 in words is "two billion, sixty-one million, seven hundred fifty-six thousand, seven hundred seventy-seven".