2660644665310 has 8 divisors (see below), whose sum is σ = 4789160397576. Its totient is φ = 1064257866120.

The previous prime is 2660644665299. The next prime is 2660644665311. The reversal of 2660644665310 is 135664460662.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×2660644665310² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2660644665311) 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, 133032233256 + ... + 133032233275.

It is an arithmetic number, because the mean of its divisors is an integer number (598645049697).

Almost surely, 2^{2660644665310} is an apocalyptic number.

2660644665310 is a deficient number, since it is larger than the sum of its proper divisors (2128515732266).

2660644665310 is a wasteful number, since it uses less digits than its factorization.

2660644665310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266064466538.

The product of its (nonzero) digits is 3732480, while the sum is 49.

The spelling of 2660644665310 in words is "two trillion, six hundred sixty billion, six hundred forty-four million, six hundred sixty-five thousand, three hundred ten".