172105992676 has 12 divisors (see below), whose sum is σ = 306122954620. Its totient is φ = 84642291360.

The previous prime is 172105992661. The next prime is 172105992677. The reversal of 172105992676 is 676299501271.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 11497415076 + 160608577600 = 107226^2 + 400760^2 .

It is not an unprimeable number, because it can be changed into a prime (172105992677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 352675971 + ... + 352676458.

Almost surely, 2^172105992676 is an apocalyptic number.

It is an amenable number.

172105992676 is a deficient number, since it is larger than the sum of its proper divisors (134016961944).

172105992676 is a wasteful number, since it uses less digits than its factorization.

172105992676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 705352494 (or 705352492 counting only the distinct ones).

The product of its (nonzero) digits is 2857680, while the sum is 55.

The spelling of 172105992676 in words is "one hundred seventy-two billion, one hundred five million, nine hundred ninety-two thousand, six hundred seventy-six".