4172688058645 has 4 divisors (see below), whose sum is σ = 5007225670380. Its totient is φ = 3338150446912.

The previous prime is 4172688058613. The next prime is 4172688058717. The reversal of 4172688058645 is 5468508862714.

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 2890523623716 + 1282164434929 = 1700154^2 + 1132327^2 .

It is a cyclic number.

It is not a de Polignac number, because 4172688058645 - 2⁵ = 4172688058613 is a prime.

It is a super-2 number, since 2×4172688058645² (a number of 26 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 (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 417268805860 + ... + 417268805869.

It is an arithmetic number, because the mean of its divisors is an integer number (1251806417595).

Almost surely, 2^{4172688058645} is an apocalyptic number.

It is an amenable number.

4172688058645 is a deficient number, since it is larger than the sum of its proper divisors (834537611735).

4172688058645 is an equidigital number, since it uses as much as digits as its factorization.

4172688058645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 834537611734.

The product of its (nonzero) digits is 103219200, while the sum is 64.

The spelling of 4172688058645 in words is "four trillion, one hundred seventy-two billion, six hundred eighty-eight million, fifty-eight thousand, six hundred forty-five".