93172068081 has 9 divisors (see below), whose sum is σ = 134583198841. Its totient is φ = 62114101572.

The previous prime is 93172068019. The next prime is 93172068103. The reversal of 93172068081 is 18086027139.

The square root of 93172068081 is 305241.

It is a perfect power (a square), and thus also a powerful number.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 93172068081 - 2¹¹ = 93172066033 is a prime.

It is a super-2 number, since 2×93172068081² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (93172068281) by changing a digit.

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 8 ways as a sum of consecutive naturals, for example, 864850 + ... + 966596.

Almost surely, 2^93172068081 is an apocalyptic number.

93172068081 is the 305241-st square number.

93172068081 is the 152621-st centered octagonal number.

It is an amenable number.

93172068081 is a deficient number, since it is larger than the sum of its proper divisors (41411130760).

93172068081 is an frugal number, since it uses more digits than its factorization.

93172068081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203500 (or 101750 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The spelling of 93172068081 in words is "ninety-three billion, one hundred seventy-two million, sixty-eight thousand, eighty-one".