172561226534 has 4 divisors (see below), whose sum is σ = 258841839804. Its totient is φ = 86280613266.

The previous prime is 172561226531. The next prime is 172561226543. The reversal of 172561226534 is 435622165271.

172561226534 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.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172561226531) 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 as a sum of consecutive naturals, namely, 43140306632 + ... + 43140306635.

It is an arithmetic number, because the mean of its divisors is an integer number (64710459951).

Almost surely, 2^172561226534 is an apocalyptic number.

172561226534 is a deficient number, since it is larger than the sum of its proper divisors (86280613270).

172561226534 is an equidigital number, since it uses as much as digits as its factorization.

172561226534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86280613269.

The product of its digits is 604800, while the sum is 44.

The spelling of 172561226534 in words is "one hundred seventy-two billion, five hundred sixty-one million, two hundred twenty-six thousand, five hundred thirty-four".