3986387715577 has 2 divisors, whose sum is σ = 3986387715578. Its totient is φ = 3986387715576.

The previous prime is 3986387715559. The next prime is 3986387715641. The reversal of 3986387715577 is 7755177836893.

3986387715577 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3593996974656 + 392390740921 = 1895784^2 + 626411^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3986387715577 is a prime.

It is not a weakly prime, because it can be changed into another prime (3986387715547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1993193857788 + 1993193857789.

It is an arithmetic number, because the mean of its divisors is an integer number (1993193857789).

Almost surely, 2^{3986387715577} is an apocalyptic number.

It is an amenable number.

3986387715577 is a deficient number, since it is larger than the sum of its proper divisors (1).

3986387715577 is an equidigital number, since it uses as much as digits as its factorization.

3986387715577 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1867017600, while the sum is 76.

The spelling of 3986387715577 in words is "three trillion, nine hundred eighty-six billion, three hundred eighty-seven million, seven hundred fifteen thousand, five hundred seventy-seven".