165870701634 has 16 divisors (see below), whose sum is σ = 361899712800. Its totient is φ = 50263848960.

The previous prime is 165870701627. The next prime is 165870701653. The reversal of 165870701634 is 436107078561.

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1256596159 + ... + 1256596290.

It is an arithmetic number, because the mean of its divisors is an integer number (22618732050).

Almost surely, 2^165870701634 is an apocalyptic number.

165870701634 is an abundant number, since it is smaller than the sum of its proper divisors (196029011166).

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

165870701634 is a wasteful number, since it uses less digits than its factorization.

165870701634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2513192465.

The product of its (nonzero) digits is 846720, while the sum is 48.

The spelling of 165870701634 in words is "one hundred sixty-five billion, eight hundred seventy million, seven hundred one thousand, six hundred thirty-four".