2666623204363 has 4 divisors (see below), whose sum is σ = 2667154091968. Its totient is φ = 2666092316760.

The previous prime is 2666623204361. The next prime is 2666623204379. The reversal of 2666623204363 is 3634023266662.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2666623204363 - 2¹ = 2666623204361 is a prime.

It is a super-2 number, since 2×2666623204363² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2666623204361) 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, 265436268 + ... + 265446313.

It is an arithmetic number, because the mean of its divisors is an integer number (666788522992).

Almost surely, 2^{2666623204363} is an apocalyptic number.

2666623204363 is a deficient number, since it is larger than the sum of its proper divisors (530887605).

2666623204363 is an equidigital number, since it uses as much as digits as its factorization.

2666623204363 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530887604.

The product of its (nonzero) digits is 6718464, while the sum is 49.

The spelling of 2666623204363 in words is "two trillion, six hundred sixty-six billion, six hundred twenty-three million, two hundred four thousand, three hundred sixty-three".