3813420777761 has 4 divisors (see below), whose sum is σ = 4358195174592. Its totient is φ = 3268646380932.

The previous prime is 3813420777739. The next prime is 3813420777773. The reversal of 3813420777761 is 1677770243183.

3813420777761 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3813420777761 - 2⁶ = 3813420777697 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3813420777697 and 3813420777706.

It is not an unprimeable number, because it can be changed into a prime (3813420777721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 272387198405 + ... + 272387198418.

It is an arithmetic number, because the mean of its divisors is an integer number (1089548793648).

Almost surely, 2^{3813420777761} is an apocalyptic number.

It is an amenable number.

3813420777761 is a deficient number, since it is larger than the sum of its proper divisors (544774396831).

3813420777761 is an equidigital number, since it uses as much as digits as its factorization.

3813420777761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 544774396830.

The product of its (nonzero) digits is 8297856, while the sum is 56.

The spelling of 3813420777761 in words is "three trillion, eight hundred thirteen billion, four hundred twenty million, seven hundred seventy-seven thousand, seven hundred sixty-one".