91234806601 has 9 divisors (see below), whose sum is σ = 91704477351. Its totient is φ = 90767533704.

The previous prime is 91234806599. The next prime is 91234806623. The reversal of 91234806601 is 10660843219.

The square root of 91234806601 is 302051.

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

It can be written as a sum of positive squares in only one way, i.e., 84971667001 + 6263139600 = 291499^2 + 79140^2 .

It is not a de Polignac number, because 91234806601 - 2¹ = 91234806599 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91234806631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 69169020 + ... + 69170338.

Almost surely, 2^91234806601 is an apocalyptic number.

91234806601 is the 302051-st square number.

91234806601 is the 151026-th centered octagonal number.

It is an amenable number.

91234806601 is a deficient number, since it is larger than the sum of its proper divisors (469670750).

91234806601 is an frugal number, since it uses more digits than its factorization.

91234806601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3096 (or 1548 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 40.

The spelling of 91234806601 in words is "ninety-one billion, two hundred thirty-four million, eight hundred six thousand, six hundred one".