2777776013 has 8 divisors (see below), whose sum is σ = 2941851960. Its totient is φ = 2613775360.

The previous prime is 2777775989. The next prime is 2777776021. The reversal of 2777776013 is 3106777772.

It can be written as a sum of positive squares in 4 ways, for example, as 820421449 + 1957354564 = 28643^2 + 44242^2 .

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 2777776013 - 2¹² = 2777771917 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2777776613) 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, 68843 + ... + 101463.

It is an arithmetic number, because the mean of its divisors is an integer number (367731495).

Almost surely, 2^2777776013 is an apocalyptic number.

It is an amenable number.

2777776013 is a deficient number, since it is larger than the sum of its proper divisors (164075947).

2777776013 is a wasteful number, since it uses less digits than its factorization.

2777776013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37647.

The product of its (nonzero) digits is 605052, while the sum is 47.

The square root of 2777776013 is about 52704.6109273183. The cubic root of 2777776013 is about 1405.7208111419.

The spelling of 2777776013 in words is "two billion, seven hundred seventy-seven million, seven hundred seventy-six thousand, thirteen".