2666688995903 has 2 divisors, whose sum is σ = 2666688995904. Its totient is φ = 2666688995902.

The previous prime is 2666688995897. The next prime is 2666688995917. The reversal of 2666688995903 is 3095998866662.

2666688995903 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2666688995903 - 2²⁴ = 2666672218687 is a prime.

It is a super-2 number, since 2×2666688995903² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2666688995603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1333344497951 + 1333344497952.

It is an arithmetic number, because the mean of its divisors is an integer number (1333344497952).

Almost surely, 2^{2666688995903} is an apocalyptic number.

2666688995903 is a deficient number, since it is larger than the sum of its proper divisors (1).

2666688995903 is an equidigital number, since it uses as much as digits as its factorization.

2666688995903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1813985280, while the sum is 77.

The spelling of 2666688995903 in words is "two trillion, six hundred sixty-six billion, six hundred eighty-eight million, nine hundred ninety-five thousand, nine hundred three".