172772432006 has 4 divisors (see below), whose sum is σ = 259158648012. Its totient is φ = 86386216002.

The previous prime is 172772431957. The next prime is 172772432023. The reversal of 172772432006 is 600234277271.

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

It is a super-2 number, since 2×172772432006² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 43193108000 + ... + 43193108003.

It is an arithmetic number, because the mean of its divisors is an integer number (64789662003).

Almost surely, 2^172772432006 is an apocalyptic number.

172772432006 is a deficient number, since it is larger than the sum of its proper divisors (86386216006).

172772432006 is an equidigital number, since it uses as much as digits as its factorization.

172772432006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86386216005.

The product of its (nonzero) digits is 197568, while the sum is 41.

The spelling of 172772432006 in words is "one hundred seventy-two billion, seven hundred seventy-two million, four hundred thirty-two thousand, six".