2606888779777 has 2 divisors, whose sum is σ = 2606888779778. Its totient is φ = 2606888779776.

The previous prime is 2606888779757. The next prime is 2606888779801. The reversal of 2606888779777 is 7779778886062.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2476723685121 + 130165094656 = 1573761^2 + 360784^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2606888779777 is a prime.

It is a super-2 number, since 2×2606888779777² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2606888779777.

It is not a weakly prime, because it can be changed into another prime (2606888779717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1303444389888 + 1303444389889.

It is an arithmetic number, because the mean of its divisors is an integer number (1303444389889).

Almost surely, 2^{2606888779777} is an apocalyptic number.

It is an amenable number.

2606888779777 is a deficient number, since it is larger than the sum of its proper divisors (1).

2606888779777 is an equidigital number, since it uses as much as digits as its factorization.

2606888779777 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5576159232, while the sum is 82.

The spelling of 2606888779777 in words is "two trillion, six hundred six billion, eight hundred eighty-eight million, seven hundred seventy-nine thousand, seven hundred seventy-seven".