91660452408 has 96 divisors (see below), whose sum is σ = 283811299200. Its totient is φ = 26179435584.

The previous prime is 91660452371. The next prime is 91660452413. The reversal of 91660452408 is 80425406619.

91660452408 is a `hidden beast` number, since 9 + 16 + 604 + 5 + 24 + 0 + 8 = 666.

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 23 ways as a sum of consecutive naturals, for example, 1462663 + ... + 1524041.

It is an arithmetic number, because the mean of its divisors is an integer number (2956367700).

Almost surely, 2^91660452408 is an apocalyptic number.

It is an amenable number.

91660452408 is an abundant number, since it is smaller than the sum of its proper divisors (192150846792).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91660452408 is a wasteful number, since it uses less digits than its factorization.

91660452408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64361 (or 64354 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 45.

The spelling of 91660452408 in words is "ninety-one billion, six hundred sixty million, four hundred fifty-two thousand, four hundred eight".