2666652776415 has 40 divisors (see below), whose sum is σ = 4861242769680. Its totient is φ = 1398109465728.

The previous prime is 2666652776401. The next prime is 2666652776423. The reversal of 2666652776415 is 5146772566662.

It is not a de Polignac number, because 2666652776415 - 2¹⁸ = 2666652514271 is a prime.

It is a super-2 number, since 2×2666652776415² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 55775494 + ... + 55823283.

It is an arithmetic number, because the mean of its divisors is an integer number (121531069242).

Almost surely, 2^{2666652776415} is an apocalyptic number.

2666652776415 is a deficient number, since it is larger than the sum of its proper divisors (2194589993265).

2666652776415 is a wasteful number, since it uses less digits than its factorization.

2666652776415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111598853 (or 111598844 counting only the distinct ones).

The product of its digits is 152409600, while the sum is 63.

The spelling of 2666652776415 in words is "two trillion, six hundred sixty-six billion, six hundred fifty-two million, seven hundred seventy-six thousand, four hundred fifteen".