166061011611 has 16 divisors (see below), whose sum is σ = 246682510848. Its totient is φ = 98501695200.

The previous prime is 166061011573. The next prime is 166061011639. The reversal of 166061011611 is 116110160661.

It is not a de Polignac number, because 166061011611 - 2⁶ = 166061011547 is a prime.

It is not an unprimeable number, because it can be changed into a prime (166061011691) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53531980 + ... + 53535081.

It is an arithmetic number, because the mean of its divisors is an integer number (15417656928).

Almost surely, 2^166061011611 is an apocalyptic number.

166061011611 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

166061011611 is a deficient number, since it is larger than the sum of its proper divisors (80621499237).

166061011611 is a wasteful number, since it uses less digits than its factorization.

166061011611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107067122.

The product of its (nonzero) digits is 1296, while the sum is 30.

The spelling of 166061011611 in words is "one hundred sixty-six billion, sixty-one million, eleven thousand, six hundred eleven".