6634668664366 has 4 divisors (see below), whose sum is σ = 9952002996552. Its totient is φ = 3317334332182.

The previous prime is 6634668664363. The next prime is 6634668664387.

6634668664366 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 6634668664295 and 6634668664304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6634668664363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1658667166090 + ... + 1658667166093.

It is an arithmetic number, because the mean of its divisors is an integer number (2488000749138).

Almost surely, 2^{6634668664366} is an apocalyptic number.

6634668664366 is a deficient number, since it is larger than the sum of its proper divisors (3317334332186).

6634668664366 is a wasteful number, since it uses less digits than its factorization.

6634668664366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3317334332185.

The product of its digits is 1934917632, while the sum is 70.

The spelling of 6634668664366 in words is "six trillion, six hundred thirty-four billion, six hundred sixty-eight million, six hundred sixty-four thousand, three hundred sixty-six".