2666758125959 has 4 divisors (see below), whose sum is σ = 2666940134616. Its totient is φ = 2666576117304.

The previous prime is 2666758125943. The next prime is 2666758126027. The reversal of 2666758125959 is 9595218576662.

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 2666758125959 - 2⁴ = 2666758125943 is a prime.

It is a super-2 number, since 2×2666758125959² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2666758125892 and 2666758125901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2666758025959) 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, 90982349 + ... + 91011654.

It is an arithmetic number, because the mean of its divisors is an integer number (666735033654).

Almost surely, 2^{2666758125959} is an apocalyptic number.

2666758125959 is a deficient number, since it is larger than the sum of its proper divisors (182008657).

2666758125959 is a wasteful number, since it uses less digits than its factorization.

2666758125959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182008656.

The product of its digits is 489888000, while the sum is 71.

The spelling of 2666758125959 in words is "two trillion, six hundred sixty-six billion, seven hundred fifty-eight million, one hundred twenty-five thousand, nine hundred fifty-nine".