172238454015045 has 24 divisors (see below), whose sum is σ = 302911925742048. Its totient is φ = 83509553460960.

The previous prime is 172238454015041. The next prime is 172238454015053. The reversal of 172238454015045 is 540510454832271.

It is not a de Polignac number, because 172238454015045 - 2² = 172238454015041 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172238454015041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47448608107 + ... + 47448611736.

It is an arithmetic number, because the mean of its divisors is an integer number (12621330239252).

Almost surely, 2^{172238454015045} is an apocalyptic number.

172238454015045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

172238454015045 is a deficient number, since it is larger than the sum of its proper divisors (130673471727003).

172238454015045 is a wasteful number, since it uses less digits than its factorization.

172238454015045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94897219873 (or 94897219862 counting only the distinct ones).

The product of its (nonzero) digits is 5376000, while the sum is 51.

The spelling of 172238454015045 in words is "one hundred seventy-two trillion, two hundred thirty-eight billion, four hundred fifty-four million, fifteen thousand, forty-five".