3666564035251 has 16 divisors (see below), whose sum is σ = 3981407580640. Its totient is φ = 3376480554720.

The previous prime is 3666564035243. The next prime is 3666564035261. The reversal of 3666564035251 is 1525304656663.

It is not a de Polignac number, because 3666564035251 - 2³ = 3666564035243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3666564035261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1057125 + ... + 2906998.

It is an arithmetic number, because the mean of its divisors is an integer number (248837973790).

Almost surely, 2^{3666564035251} is an apocalyptic number.

3666564035251 is a deficient number, since it is larger than the sum of its proper divisors (314843545389).

3666564035251 is an equidigital number, since it uses as much as digits as its factorization.

3666564035251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3964583 (or 3964557 counting only the distinct ones).

The product of its (nonzero) digits is 11664000, while the sum is 52.

The spelling of 3666564035251 in words is "three trillion, six hundred sixty-six billion, five hundred sixty-four million, thirty-five thousand, two hundred fifty-one".