166094889433 has 4 divisors (see below), whose sum is σ = 181194424848. Its totient is φ = 150995354020.

The previous prime is 166094889431. The next prime is 166094889439. The reversal of 166094889433 is 334988490661.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 166094889433 - 2¹ = 166094889431 is a prime.

It is a super-2 number, since 2×166094889433² (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 (166094889431) 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, 7549767691 + ... + 7549767712.

It is an arithmetic number, because the mean of its divisors is an integer number (45298606212).

Almost surely, 2^166094889433 is an apocalyptic number.

It is an amenable number.

166094889433 is a deficient number, since it is larger than the sum of its proper divisors (15099535415).

166094889433 is a wasteful number, since it uses less digits than its factorization.

166094889433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15099535414.

The product of its (nonzero) digits is 26873856, while the sum is 61.

The spelling of 166094889433 in words is "one hundred sixty-six billion, ninety-four million, eight hundred eighty-nine thousand, four hundred thirty-three".