3666135033791 has 16 divisors (see below), whose sum is σ = 3781171817760. Its totient is φ = 3551947407360.

The previous prime is 3666135033767. The next prime is 3666135033793. The reversal of 3666135033791 is 1973305316663.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 3666135033791 - 2¹⁰ = 3666135032767 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3666135033793) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28186355 + ... + 28316123.

It is an arithmetic number, because the mean of its divisors is an integer number (236323238610).

Almost surely, 2^{3666135033791} is an apocalyptic number.

3666135033791 is a deficient number, since it is larger than the sum of its proper divisors (115036783969).

3666135033791 is a wasteful number, since it uses less digits than its factorization.

3666135033791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133034.

The product of its (nonzero) digits is 5511240, while the sum is 53.

The spelling of 3666135033791 in words is "three trillion, six hundred sixty-six billion, one hundred thirty-five million, thirty-three thousand, seven hundred ninety-one".