2666626413 has 8 divisors (see below), whose sum is σ = 3878729376. Its totient is φ = 1616137200.

The previous prime is 2666626411. The next prime is 2666626423. The reversal of 2666626413 is 3146266662.

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

It is not a de Polignac number, because 2666626413 - 2¹ = 2666626411 is a prime.

It is a super-2 number, since 2×2666626413² = 14221792853018493138, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2666626411) 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, 40403398 + ... + 40403463.

It is an arithmetic number, because the mean of its divisors is an integer number (484841172).

Almost surely, 2^2666626413 is an apocalyptic number.

It is an amenable number.

2666626413 is a deficient number, since it is larger than the sum of its proper divisors (1212102963).

2666626413 is a wasteful number, since it uses less digits than its factorization.

2666626413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80806875.

The product of its digits is 373248, while the sum is 42.

The square root of 2666626413 is about 51639.3881935098. The cubic root of 2666626413 is about 1386.7155710828.

The spelling of 2666626413 in words is "two billion, six hundred sixty-six million, six hundred twenty-six thousand, four hundred thirteen".