168070728933 has 24 divisors (see below), whose sum is σ = 251296882200. Its totient is φ = 108115951104.

The previous prime is 168070728901. The next prime is 168070729003. The reversal of 168070728933 is 339827070861.

It can be written as a sum of positive squares in 4 ways, for example, as 95395735044 + 72674993889 = 308862^2 + 269583^2 .

It is not a de Polignac number, because 168070728933 - 2⁵ = 168070728901 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 168070728933.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168070728233) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 219841 + ... + 620057.

It is an arithmetic number, because the mean of its divisors is an integer number (10470703425).

Almost surely, 2^168070728933 is an apocalyptic number.

It is an amenable number.

168070728933 is a deficient number, since it is larger than the sum of its proper divisors (83226153267).

168070728933 is a wasteful number, since it uses less digits than its factorization.

168070728933 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401861 (or 401858 counting only the distinct ones).

The product of its (nonzero) digits is 3048192, while the sum is 54.

The spelling of 168070728933 in words is "one hundred sixty-eight billion, seventy million, seven hundred twenty-eight thousand, nine hundred thirty-three".