5166720171867 has 16 divisors (see below), whose sum is σ = 6960100845600. Its totient is φ = 3408911035392.

The previous prime is 5166720171853. The next prime is 5166720171931. The reversal of 5166720171867 is 7681710276615.

It is not a de Polignac number, because 5166720171867 - 2⁶ = 5166720171803 is a prime.

It is a super-3 number, since 3×5166720171867³ (a number of 39 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (5166720171367) 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, 22354009 + ... + 22583957.

It is an arithmetic number, because the mean of its divisors is an integer number (435006302850).

Almost surely, 2^{5166720171867} is an apocalyptic number.

5166720171867 is a deficient number, since it is larger than the sum of its proper divisors (1793380673733).

5166720171867 is a wasteful number, since it uses less digits than its factorization.

5166720171867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307262.

The product of its (nonzero) digits is 5927040, while the sum is 57.

The spelling of 5166720171867 in words is "five trillion, one hundred sixty-six billion, seven hundred twenty million, one hundred seventy-one thousand, eight hundred sixty-seven".