3666129491051 has 4 divisors (see below), whose sum is σ = 3666330382104. Its totient is φ = 3665928600000.

The previous prime is 3666129491047. The next prime is 3666129491053. The reversal of 3666129491051 is 1501949216663.

3666129491051 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.

It is a cyclic number.

It is not a de Polignac number, because 3666129491051 - 2² = 3666129491047 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3666129490984 and 3666129491002.

It is not an unprimeable number, because it can be changed into a prime (3666129491053) 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, 100418150 + ... + 100454651.

It is an arithmetic number, because the mean of its divisors is an integer number (916582595526).

Almost surely, 2^{3666129491051} is an apocalyptic number.

3666129491051 is a deficient number, since it is larger than the sum of its proper divisors (200891053).

3666129491051 is a wasteful number, since it uses less digits than its factorization.

3666129491051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200891052.

The product of its (nonzero) digits is 2099520, while the sum is 53.

The spelling of 3666129491051 in words is "three trillion, six hundred sixty-six billion, one hundred twenty-nine million, four hundred ninety-one thousand, fifty-one".