91326537361 has 8 divisors (see below), whose sum is σ = 94835578824. Its totient is φ = 87878522880.

The previous prime is 91326537329. The next prime is 91326537373. The reversal of 91326537361 is 16373562319.

It can be written as a sum of positive squares in 4 ways, for example, as 744198400 + 90582338961 = 27280^2 + 300969^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 91326537361 - 2⁵ = 91326537329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91326537061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15253696 + ... + 15259681.

It is an arithmetic number, because the mean of its divisors is an integer number (11854447353).

Almost surely, 2^91326537361 is an apocalyptic number.

It is an amenable number.

91326537361 is a deficient number, since it is larger than the sum of its proper divisors (3509041463).

91326537361 is a wasteful number, since it uses less digits than its factorization.

91326537361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30513491.

The product of its digits is 612360, while the sum is 46.

The spelling of 91326537361 in words is "ninety-one billion, three hundred twenty-six million, five hundred thirty-seven thousand, three hundred sixty-one".