6634543212664 has 16 divisors (see below), whose sum is σ = 12440420823600. Its totient is φ = 3317097659712.

The previous prime is 6634543212653. The next prime is 6634543212679. The reversal of 6634543212664 is 4662123454366.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21581157 + ... + 21886420.

It is an arithmetic number, because the mean of its divisors is an integer number (777526301475).

Almost surely, 2^{6634543212664} is an apocalyptic number.

It is an amenable number.

6634543212664 is a deficient number, since it is larger than the sum of its proper divisors (5805877610936).

6634543212664 is a wasteful number, since it uses less digits than its factorization.

6634543212664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43486662 (or 43486658 counting only the distinct ones).

The product of its digits is 14929920, while the sum is 52.

The spelling of 6634543212664 in words is "six trillion, six hundred thirty-four billion, five hundred forty-three million, two hundred twelve thousand, six hundred sixty-four".