172572666683 has 4 divisors (see below), whose sum is σ = 180075826128. Its totient is φ = 165069507240.

The previous prime is 172572666677. The next prime is 172572666691. The reversal of 172572666683 is 386666275271.

172572666683 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 386666275271 = 34603 ⋅11174357.

It is a cyclic number.

It is not a de Polignac number, because 172572666683 - 2⁴ = 172572666667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (172572666583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3751579688 + ... + 3751579733.

It is an arithmetic number, because the mean of its divisors is an integer number (45018956532).

Almost surely, 2^172572666683 is an apocalyptic number.

172572666683 is a deficient number, since it is larger than the sum of its proper divisors (7503159445).

172572666683 is an equidigital number, since it uses as much as digits as its factorization.

172572666683 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7503159444.

The product of its digits is 30481920, while the sum is 59.

The spelling of 172572666683 in words is "one hundred seventy-two billion, five hundred seventy-two million, six hundred sixty-six thousand, six hundred eighty-three".