172728874159 has 8 divisors (see below), whose sum is σ = 174825045360. Its totient is φ = 170633062656.

The previous prime is 172728874147. The next prime is 172728874181. The reversal of 172728874159 is 951478827271.

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

It is not a de Polignac number, because 172728874159 - 2²¹ = 172726777007 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 172728874097 and 172728874106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172728872159) 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, 948607 + ... + 1115935.

It is an arithmetic number, because the mean of its divisors is an integer number (21853130670).

Almost surely, 2^172728874159 is an apocalyptic number.

172728874159 is a deficient number, since it is larger than the sum of its proper divisors (2096171201).

172728874159 is a wasteful number, since it uses less digits than its factorization.

172728874159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179849.

The product of its digits is 15805440, while the sum is 61.

The spelling of 172728874159 in words is "one hundred seventy-two billion, seven hundred twenty-eight million, eight hundred seventy-four thousand, one hundred fifty-nine".