6156610051666 has 8 divisors (see below), whose sum is σ = 9235480541004. Its totient is φ = 3078116538000.

The previous prime is 6156610051663. The next prime is 6156610051681. The reversal of 6156610051666 is 6661500166516.

It can be written as a sum of positive squares in 2 ways, for example, as 6138873405625 + 17736646041 = 2477675^2 + 133179^2 .

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

It is not an unprimeable number, because it can be changed into a prime (6156610051663) 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, 94203085 + ... + 94268416.

Almost surely, 2^{6156610051666} is an apocalyptic number.

6156610051666 is a deficient number, since it is larger than the sum of its proper divisors (3078870489338).

6156610051666 is a wasteful number, since it uses less digits than its factorization.

6156610051666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188487836.

The product of its (nonzero) digits is 1166400, while the sum is 49.

The spelling of 6156610051666 in words is "six trillion, one hundred fifty-six billion, six hundred ten million, fifty-one thousand, six hundred sixty-six".