2660540086601 has 4 divisors (see below), whose sum is σ = 2660628392400. Its totient is φ = 2660451780804.

The previous prime is 2660540086583. The next prime is 2660540086613. The reversal of 2660540086601 is 1066800450662.

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 a de Polignac number, because none of the positive numbers 2^k-2660540086601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2660540086621) 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 in 3 ways as a sum of consecutive naturals, for example, 44107691 + ... + 44167968.

It is an arithmetic number, because the mean of its divisors is an integer number (665157098100).

Almost surely, 2^{2660540086601} is an apocalyptic number.

It is an amenable number.

2660540086601 is a deficient number, since it is larger than the sum of its proper divisors (88305799).

2660540086601 is an equidigital number, since it uses as much as digits as its factorization.

2660540086601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88305798.

The product of its (nonzero) digits is 414720, while the sum is 44.

The spelling of 2660540086601 in words is "two trillion, six hundred sixty billion, five hundred forty million, eighty-six thousand, six hundred one".