166971535422 has 16 divisors (see below), whose sum is σ = 344715428352. Its totient is φ = 53861785560.

The previous prime is 166971535421. The next prime is 166971535463. The reversal of 166971535422 is 224535179661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166971535421) 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, 448848028 + ... + 448848399.

It is an arithmetic number, because the mean of its divisors is an integer number (21544714272).

Almost surely, 2^166971535422 is an apocalyptic number.

166971535422 is an abundant number, since it is smaller than the sum of its proper divisors (177743892930).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

166971535422 is a wasteful number, since it uses less digits than its factorization.

166971535422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 897696463.

The product of its digits is 2721600, while the sum is 51.

The spelling of 166971535422 in words is "one hundred sixty-six billion, nine hundred seventy-one million, five hundred thirty-five thousand, four hundred twenty-two".