2661335635423 has 8 divisors (see below), whose sum is σ = 2663881713360. Its totient is φ = 2658790246080.

The previous prime is 2661335635417. The next prime is 2661335635447. The reversal of 2661335635423 is 3245365331662.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2661335635423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2661335635223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7734363 + ... + 8071123.

It is an arithmetic number, because the mean of its divisors is an integer number (332985214170).

Almost surely, 2^{2661335635423} is an apocalyptic number.

2661335635423 is a deficient number, since it is larger than the sum of its proper divisors (2546077937).

2661335635423 is a wasteful number, since it uses less digits than its factorization.

2661335635423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344297.

The product of its digits is 6998400, while the sum is 49.

The spelling of 2661335635423 in words is "two trillion, six hundred sixty-one billion, three hundred thirty-five million, six hundred thirty-five thousand, four hundred twenty-three".