66166634441011 has 8 divisors (see below), whose sum is σ = 71301848691584. Its totient is φ = 61037916353280.

The previous prime is 66166634441009. The next prime is 66166634441021. The reversal of 66166634441011 is 11014443666166.

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

It is a cyclic number.

It is not a de Polignac number, because 66166634441011 - 2¹ = 66166634441009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66166634441021) 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, 1624019550 + ... + 1624060291.

It is an arithmetic number, because the mean of its divisors is an integer number (8912731086448).

Almost surely, 2^{66166634441011} is an apocalyptic number.

66166634441011 is a deficient number, since it is larger than the sum of its proper divisors (5135214250573).

66166634441011 is a wasteful number, since it uses less digits than its factorization.

66166634441011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3248081421.

The product of its (nonzero) digits is 1492992, while the sum is 49.

The spelling of 66166634441011 in words is "sixty-six trillion, one hundred sixty-six billion, six hundred thirty-four million, four hundred forty-one thousand, eleven".