172273636516557 has 16 divisors (see below), whose sum is σ = 229730234227200. Its totient is φ = 114833065605552.

The previous prime is 172273636516537. The next prime is 172273636516577. The reversal of 172273636516557 is 755615636372271.

172273636516557 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (172273636516537) and next prime (172273636516577).

It is not a de Polignac number, because 172273636516557 - 2¹⁵ = 172273636483789 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172273636516507) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1729205848 + ... + 1729305470.

It is an arithmetic number, because the mean of its divisors is an integer number (14358139639200).

Almost surely, 2^{172273636516557} is an apocalyptic number.

It is an amenable number.

172273636516557 is a deficient number, since it is larger than the sum of its proper divisors (57456597710643).

172273636516557 is an equidigital number, since it uses as much as digits as its factorization.

172273636516557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174272.

The product of its digits is 333396000, while the sum is 66.

The spelling of 172273636516557 in words is "one hundred seventy-two trillion, two hundred seventy-three billion, six hundred thirty-six million, five hundred sixteen thousand, five hundred fifty-seven".