172723061842 has 8 divisors (see below), whose sum is σ = 259120414476. Its totient is φ = 86349590352.

The previous prime is 172723061837. The next prime is 172723061867. The reversal of 172723061842 is 248160327271.

It can be written as a sum of positive squares in 2 ways, for example, as 171645318601 + 1077743241 = 414301^2 + 32829^2 .

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, 5952193 + ... + 5981140.

Almost surely, 2^172723061842 is an apocalyptic number.

172723061842 is a deficient number, since it is larger than the sum of its proper divisors (86397352634).

172723061842 is a wasteful number, since it uses less digits than its factorization.

172723061842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11940572.

The product of its (nonzero) digits is 225792, while the sum is 43.

The spelling of 172723061842 in words is "one hundred seventy-two billion, seven hundred twenty-three million, sixty-one thousand, eight hundred forty-two".