172543635412073 has 8 divisors (see below), whose sum is σ = 174907638493896. Its totient is φ = 170179642915200.

The previous prime is 172543635411997. The next prime is 172543635412103. The reversal of 172543635412073 is 370214536345271.

172543635412073 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 3062892012544 + 169480743399529 = 1750112^2 + 13018477^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 172543635412073 - 2³² = 172539340444777 is a prime.

It is a super-2 number, since 2×172543635412073² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (172543635418073) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33546743 + ... + 38346723.

It is an arithmetic number, because the mean of its divisors is an integer number (21863454811737).

Almost surely, 2^{172543635412073} is an apocalyptic number.

It is an amenable number.

172543635412073 is a deficient number, since it is larger than the sum of its proper divisors (2364003081823).

172543635412073 is an equidigital number, since it uses as much as digits as its factorization.

172543635412073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5292475.

The product of its (nonzero) digits is 12700800, while the sum is 53.

The spelling of 172543635412073 in words is "one hundred seventy-two trillion, five hundred forty-three billion, six hundred thirty-five million, four hundred twelve thousand, seventy-three".