166045605511 has 8 divisors (see below), whose sum is σ = 167942214000. Its totient is φ = 164155783680.

The previous prime is 166045605493. The next prime is 166045605547. The reversal of 166045605511 is 115506540661.

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 166045605511 - 2¹⁵ = 166045572743 is a prime.

It is a super-2 number, since 2×166045605511² (a number of 23 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 (166045606511) 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, 1647445 + ... + 1745326.

It is an arithmetic number, because the mean of its divisors is an integer number (20992776750).

Almost surely, 2^166045605511 is an apocalyptic number.

166045605511 is a deficient number, since it is larger than the sum of its proper divisors (1896608489).

166045605511 is a wasteful number, since it uses less digits than its factorization.

166045605511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3393329.

The product of its (nonzero) digits is 108000, while the sum is 40.

The spelling of 166045605511 in words is "one hundred sixty-six billion, forty-five million, six hundred five thousand, five hundred eleven".