91066943529 has 9 divisors (see below), whose sum is σ = 131542448349. Its totient is φ = 60710692140.

The previous prime is 91066943507. The next prime is 91066943563. The reversal of 91066943529 is 92534966019.

The square root of 91066943529 is 301773.

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

91066943529 is a `hidden beast` number, since 9 + 10 + 6 + 69 + 43 + 529 = 666.

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

It is not a de Polignac number, because 91066943529 - 2¹⁵ = 91066910761 is a prime.

It is not an unprimeable number, because it can be changed into a prime (91066943599) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 855024 + ... + 955614.

Almost surely, 2^91066943529 is an apocalyptic number.

91066943529 is the 301773-rd square number.

91066943529 is the 150887-th centered octagonal number.

It is an amenable number.

91066943529 is a deficient number, since it is larger than the sum of its proper divisors (40475504820).

91066943529 is an frugal number, since it uses more digits than its factorization.

91066943529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201188 (or 100594 counting only the distinct ones).

The product of its (nonzero) digits is 3149280, while the sum is 54.

The spelling of 91066943529 in words is "ninety-one billion, sixty-six million, nine hundred forty-three thousand, five hundred twenty-nine".