2987686318777 has 2 divisors, whose sum is σ = 2987686318778. Its totient is φ = 2987686318776.

The previous prime is 2987686318741. The next prime is 2987686318811. The reversal of 2987686318777 is 7778136867892.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2874316735161 + 113369583616 = 1695381^2 + 336704^2 .

It is a cyclic number.

It is not a de Polignac number, because 2987686318777 - 2³⁵ = 2953326580409 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2987686318697 and 2987686318706.

It is not a weakly prime, because it can be changed into another prime (2987686318577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1493843159388 + 1493843159389.

It is an arithmetic number, because the mean of its divisors is an integer number (1493843159389).

Almost surely, 2^{2987686318777} is an apocalyptic number.

It is an amenable number.

2987686318777 is a deficient number, since it is larger than the sum of its proper divisors (1).

2987686318777 is an equidigital number, since it uses as much as digits as its factorization.

2987686318777 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2389782528, while the sum is 79.

The spelling of 2987686318777 in words is "two trillion, nine hundred eighty-seven billion, six hundred eighty-six million, three hundred eighteen thousand, seven hundred seventy-seven".