166523101445 has 32 divisors (see below), whose sum is σ = 204649079040. Its totient is φ = 130043898880.

The previous prime is 166523101319. The next prime is 166523101487. The reversal of 166523101445 is 544101325661.

It is not a de Polignac number, because 166523101445 - 2⁸ = 166523101189 is a prime.

It is a super-2 number, since 2×166523101445² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 166523101399 and 166523101408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 57242651 + ... + 57245559.

It is an arithmetic number, because the mean of its divisors is an integer number (6395283720).

Almost surely, 2^166523101445 is an apocalyptic number.

It is an amenable number.

166523101445 is a deficient number, since it is larger than the sum of its proper divisors (38125977595).

166523101445 is a wasteful number, since it uses less digits than its factorization.

166523101445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4525.

The product of its (nonzero) digits is 86400, while the sum is 38.

The spelling of 166523101445 in words is "one hundred sixty-six billion, five hundred twenty-three million, one hundred one thousand, four hundred forty-five".