2666166061 has 8 divisors (see below), whose sum is σ = 2888873120. Its totient is φ = 2445975792.

The previous prime is 2666166053. The next prime is 2666166073. The reversal of 2666166061 is 1606616662.

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

It is not a de Polignac number, because 2666166061 - 2³ = 2666166053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2666166031) 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, 626991 + ... + 631228.

It is an arithmetic number, because the mean of its divisors is an integer number (361109140).

Almost surely, 2^2666166061 is an apocalyptic number.

It is an amenable number.

2666166061 is a deficient number, since it is larger than the sum of its proper divisors (222707059).

2666166061 is a wasteful number, since it uses less digits than its factorization.

2666166061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1258395.

The product of its (nonzero) digits is 93312, while the sum is 40.

The square root of 2666166061 is about 51634.9306284031. The cubic root of 2666166061 is about 1386.6357681249.

The spelling of 2666166061 in words is "two billion, six hundred sixty-six million, one hundred sixty-six thousand, sixty-one".