172100217610577 has 4 divisors (see below), whose sum is σ = 172111723958196. Its totient is φ = 172088711262960.

The previous prime is 172100217610547. The next prime is 172100217610591. The reversal of 172100217610577 is 775016712001271.

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

It can be written as a sum of positive squares in 2 ways, for example, as 121539357711121 + 50560859899456 = 11024489^2 + 7110616^2 .

It is a cyclic number.

It is not a de Polignac number, because 172100217610577 - 2⁴⁰ = 171000705982801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (172100217610547) 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 in 3 ways as a sum of consecutive naturals, for example, 5753151374 + ... + 5753181287.

It is an arithmetic number, because the mean of its divisors is an integer number (43027930989549).

Almost surely, 2^{172100217610577} is an apocalyptic number.

It is an amenable number.

172100217610577 is a deficient number, since it is larger than the sum of its proper divisors (11506347619).

172100217610577 is a wasteful number, since it uses less digits than its factorization.

172100217610577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11506347618.

The product of its (nonzero) digits is 288120, while the sum is 47.

The spelling of 172100217610577 in words is "one hundred seventy-two trillion, one hundred billion, two hundred seventeen million, six hundred ten thousand, five hundred seventy-seven".