366626444626663 has 4 divisors (see below), whose sum is σ = 394828478828728. Its totient is φ = 338424410424600.

The previous prime is 366626444626661. The next prime is 366626444626669.

It is a happy number.

366626444626663 is nontrivially palindromic in base 10.

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 366626444626663 - 2¹ = 366626444626661 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 366626444626592 and 366626444626601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (366626444626661) 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, 14101017101013 + ... + 14101017101038.

It is an arithmetic number, because the mean of its divisors is an integer number (98707119707182).

Almost surely, 2^{366626444626663} is an apocalyptic number.

366626444626663 is a deficient number, since it is larger than the sum of its proper divisors (28202034202065).

366626444626663 is a wasteful number, since it uses less digits than its factorization.

366626444626663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28202034202064.

The product of its digits is 3869835264, while the sum is 70.

The spelling of 366626444626663 in words is "three hundred sixty-six trillion, six hundred twenty-six billion, four hundred forty-four million, six hundred twenty-six thousand, six hundred sixty-three".