3835866346121 has 2 divisors, whose sum is σ = 3835866346122. Its totient is φ = 3835866346120.

The previous prime is 3835866346099. The next prime is 3835866346181. The reversal of 3835866346121 is 1216436685383.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1994930256400 + 1840936089721 = 1412420^2 + 1356811^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3835866346121 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (3835866346181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1917933173060 + 1917933173061.

It is an arithmetic number, because the mean of its divisors is an integer number (1917933173061).

Almost surely, 2^{3835866346121} is an apocalyptic number.

It is an amenable number.

3835866346121 is a deficient number, since it is larger than the sum of its proper divisors (1).

3835866346121 is an equidigital number, since it uses as much as digits as its factorization.

3835866346121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14929920, while the sum is 56.

The spelling of 3835866346121 in words is "three trillion, eight hundred thirty-five billion, eight hundred sixty-six million, three hundred forty-six thousand, one hundred twenty-one".