6645626265466 has 4 divisors (see below), whose sum is σ = 9968439398202. Its totient is φ = 3322813132732.

The previous prime is 6645626265457. The next prime is 6645626265469.

6645626265466 is nontrivially palindromic in base 10.

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

It can be written as a sum of positive squares in only one way, i.e., 6135157455625 + 510468809841 = 2476925^2 + 714471^2 .

It is a junction number, because it is equal to n+sod(n) for n = 6645626265398 and 6645626265407.

It is not an unprimeable number, because it can be changed into a prime (6645626265469) 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 as a sum of consecutive naturals, namely, 1661406566365 + ... + 1661406566368.

Almost surely, 2^{6645626265466} is an apocalyptic number.

6645626265466 is a deficient number, since it is larger than the sum of its proper divisors (3322813132736).

6645626265466 is a wasteful number, since it uses less digits than its factorization.

6645626265466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3322813132735.

The product of its digits is 447897600, while the sum is 64.

The spelling of 6645626265466 in words is "six trillion, six hundred forty-five billion, six hundred twenty-six million, two hundred sixty-five thousand, four hundred sixty-six".