166451414011 has 4 divisors (see below), whose sum is σ = 167722035624. Its totient is φ = 165180792400.

The previous prime is 166451413991. The next prime is 166451414039. The reversal of 166451414011 is 110414154661.

166451414011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 110414154661 = 53 ⋅2083285937.

It is a cyclic number.

It is not a de Polignac number, because 166451414011 - 2⁵ = 166451413979 is a prime.

It is a super-2 number, since 2×166451414011² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166451414081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 635310610 + ... + 635310871.

It is an arithmetic number, because the mean of its divisors is an integer number (41930508906).

Almost surely, 2^166451414011 is an apocalyptic number.

166451414011 is a deficient number, since it is larger than the sum of its proper divisors (1270621613).

166451414011 is a wasteful number, since it uses less digits than its factorization.

166451414011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1270621612.

The product of its (nonzero) digits is 11520, while the sum is 34.

Adding to 166451414011 its reverse (110414154661), we get a palindrome (276865568672).

The spelling of 166451414011 in words is "one hundred sixty-six billion, four hundred fifty-one million, four hundred fourteen thousand, eleven".