166042511522 has 8 divisors (see below), whose sum is σ = 249200395776. Its totient is φ = 82975712932.

The previous prime is 166042511489. The next prime is 166042511543. The reversal of 166042511522 is 225115240661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22766858 + ... + 22774149.

It is an arithmetic number, because the mean of its divisors is an integer number (31150049472).

Almost surely, 2^166042511522 is an apocalyptic number.

166042511522 is a deficient number, since it is larger than the sum of its proper divisors (83157884254).

166042511522 is a wasteful number, since it uses less digits than its factorization.

166042511522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45542832.

The product of its (nonzero) digits is 28800, while the sum is 35.

The spelling of 166042511522 in words is "one hundred sixty-six billion, forty-two million, five hundred eleven thousand, five hundred twenty-two".