2660646133061 has 4 divisors (see below), whose sum is σ = 3040738437792. Its totient is φ = 2280553828332.

The previous prime is 2660646133031. The next prime is 2660646133063. The reversal of 2660646133061 is 1603316460662.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2660646133061 - 2⁶ = 2660646132997 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2660646133063) 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, 190046152355 + ... + 190046152368.

It is an arithmetic number, because the mean of its divisors is an integer number (760184609448).

Almost surely, 2^{2660646133061} is an apocalyptic number.

It is an amenable number.

2660646133061 is a deficient number, since it is larger than the sum of its proper divisors (380092304731).

2660646133061 is an equidigital number, since it uses as much as digits as its factorization.

2660646133061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380092304730.

The product of its (nonzero) digits is 559872, while the sum is 44.

The spelling of 2660646133061 in words is "two trillion, six hundred sixty billion, six hundred forty-six million, one hundred thirty-three thousand, sixty-one".