91324988453 has 4 divisors (see below), whose sum is σ = 92611255968. Its totient is φ = 90038720940.

The previous prime is 91324988437. The next prime is 91324988459. The reversal of 91324988453 is 35488942319.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 91324988453 - 2⁴ = 91324988437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91324988459) 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 3 ways as a sum of consecutive naturals, for example, 643133651 + ... + 643133792.

It is an arithmetic number, because the mean of its divisors is an integer number (23152813992).

Almost surely, 2^91324988453 is an apocalyptic number.

It is an amenable number.

91324988453 is a deficient number, since it is larger than the sum of its proper divisors (1286267515).

91324988453 is a wasteful number, since it uses less digits than its factorization.

91324988453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1286267514.

The product of its digits is 7464960, while the sum is 56.

The spelling of 91324988453 in words is "ninety-one billion, three hundred twenty-four million, nine hundred eighty-eight thousand, four hundred fifty-three".