166151161066111 has 8 divisors (see below), whose sum is σ = 182739083857344. Its totient is φ = 150107104596000.

The previous prime is 166151161066061. The next prime is 166151161066117. The reversal of 166151161066111 is 111660161151661.

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 166151161066111 - 2¹⁵ = 166151161033343 is a prime.

It is a super-2 number, since 2×166151161066111² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166151161066117) 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, 135966579640 + ... + 135966580861.

It is an arithmetic number, because the mean of its divisors is an integer number (22842385482168).

Almost surely, 2^{166151161066111} is an apocalyptic number.

166151161066111 is a deficient number, since it is larger than the sum of its proper divisors (16587922791233).

166151161066111 is a wasteful number, since it uses less digits than its factorization.

166151161066111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271933160561.

The product of its (nonzero) digits is 38880, while the sum is 43.

The spelling of 166151161066111 in words is "one hundred sixty-six trillion, one hundred fifty-one billion, one hundred sixty-one million, sixty-six thousand, one hundred eleven".