32172734851 has 4 divisors (see below), whose sum is σ = 32208207352. Its totient is φ = 32137262352.

The previous prime is 32172734843. The next prime is 32172734861. The reversal of 32172734851 is 15843727123.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 32172734851 - 2³ = 32172734843 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 32172734798 and 32172734807.

It is not an unprimeable number, because it can be changed into a prime (32172734861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17734890 + ... + 17736703.

It is an arithmetic number, because the mean of its divisors is an integer number (8052051838).

Almost surely, 2^32172734851 is an apocalyptic number.

32172734851 is a deficient number, since it is larger than the sum of its proper divisors (35472501).

32172734851 is an equidigital number, since it uses as much as digits as its factorization.

32172734851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35472500.

The product of its digits is 282240, while the sum is 43.

The spelling of 32172734851 in words is "thirty-two billion, one hundred seventy-two million, seven hundred thirty-four thousand, eight hundred fifty-one".