91693881365 has 8 divisors (see below), whose sum is σ = 110041452960. Its totient is φ = 73349241552.

The previous prime is 91693881361. The next prime is 91693881379. The reversal of 91693881365 is 56318839619.

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 91693881365 - 2² = 91693881361 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91693881361) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 663539 + ... + 789728.

It is an arithmetic number, because the mean of its divisors is an integer number (13755181620).

Almost surely, 2^91693881365 is an apocalyptic number.

It is an amenable number.

91693881365 is a deficient number, since it is larger than the sum of its proper divisors (18347571595).

91693881365 is a wasteful number, since it uses less digits than its factorization.

91693881365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1465891.

The product of its digits is 8398080, while the sum is 59.

The spelling of 91693881365 in words is "ninety-one billion, six hundred ninety-three million, eight hundred eighty-one thousand, three hundred sixty-five".