91469691365 has 16 divisors (see below), whose sum is σ = 118213940208. Its totient is φ = 67542875136.

The previous prime is 91469691359. The next prime is 91469691407. The reversal of 91469691365 is 56319696419.

It can be written as a sum of positive squares in 8 ways, for example, as 4298900356 + 87170791009 = 65566^2 + 295247^2 .

It is a cyclic number.

It is not a de Polignac number, because 91469691365 - 2¹⁴ = 91469674981 is a prime.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1523597 + ... + 1582493.

It is an arithmetic number, because the mean of its divisors is an integer number (7388371263).

Almost surely, 2^91469691365 is an apocalyptic number.

It is an amenable number.

91469691365 is a deficient number, since it is larger than the sum of its proper divisors (26744248843).

91469691365 is a wasteful number, since it uses less digits than its factorization.

91469691365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82808.

The product of its digits is 9447840, while the sum is 59.

The spelling of 91469691365 in words is "ninety-one billion, four hundred sixty-nine million, six hundred ninety-one thousand, three hundred sixty-five".