3877377787993 has 2 divisors, whose sum is σ = 3877377787994. Its totient is φ = 3877377787992.

The previous prime is 3877377787957. The next prime is 3877377788003. The reversal of 3877377787993 is 3997877737783.

3877377787993 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2082442366489 + 1794935421504 = 1443067^2 + 1339752^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3877377787993 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3877377787993.

It is not a weakly prime, because it can be changed into another prime (3877377787693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1938688893996 + 1938688893997.

It is an arithmetic number, because the mean of its divisors is an integer number (1938688893997).

Almost surely, 2^{3877377787993} is an apocalyptic number.

It is an amenable number.

3877377787993 is a deficient number, since it is larger than the sum of its proper divisors (1).

3877377787993 is an equidigital number, since it uses as much as digits as its factorization.

3877377787993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16467095232, while the sum is 85.

The spelling of 3877377787993 in words is "three trillion, eight hundred seventy-seven billion, three hundred seventy-seven million, seven hundred eighty-seven thousand, nine hundred ninety-three".