6659862810241 has 3 divisors (see below), whose sum is σ = 6659865390913. Its totient is φ = 6659860229570.

The previous prime is 6659862810217. The next prime is 6659862810311. The reversal of 6659862810241 is 1420182689566.

It is a happy number.

The square root of 6659862810241 is 2580671.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 6659862810241 - 2⁹ = 6659862809729 is a prime.

It is a super-2 number, since 2×6659862810241² (a number of 26 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6659862810641) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1290336 + ... + 3871006.

Almost surely, 2^{6659862810241} is an apocalyptic number.

6659862810241 is the 2580671-st square number.

6659862810241 is the 1290336-th centered octagonal number.

It is an amenable number.

6659862810241 is a deficient number, since it is larger than the sum of its proper divisors (2580672).

6659862810241 is an frugal number, since it uses more digits than its factorization.

6659862810241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5161342 (or 2580671 counting only the distinct ones).

The product of its (nonzero) digits is 9953280, while the sum is 58.

The spelling of 6659862810241 in words is "six trillion, six hundred fifty-nine billion, eight hundred sixty-two million, eight hundred ten thousand, two hundred forty-one".