3778370011121 has 4 divisors (see below), whose sum is σ = 3778375217652. Its totient is φ = 3778364804592.

The previous prime is 3778370011099. The next prime is 3778370011123. The reversal of 3778370011121 is 1211100738773.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2409619767025 + 1368750244096 = 1552295^2 + 1169936^2 .

It is a cyclic number.

It is not a de Polignac number, because 3778370011121 - 2⁶ = 3778370011057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3778370011123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1295846 + ... + 3039071.

It is an arithmetic number, because the mean of its divisors is an integer number (944593804413).

Almost surely, 2^{3778370011121} is an apocalyptic number.

It is an amenable number.

3778370011121 is a deficient number, since it is larger than the sum of its proper divisors (5206531).

3778370011121 is an equidigital number, since it uses as much as digits as its factorization.

3778370011121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5206530.

The product of its (nonzero) digits is 49392, while the sum is 41.

Adding to 3778370011121 its reverse (1211100738773), we get a palindrome (4989470749894).

The spelling of 3778370011121 in words is "three trillion, seven hundred seventy-eight billion, three hundred seventy million, eleven thousand, one hundred twenty-one".