91409646011 has 8 divisors (see below), whose sum is σ = 94567779120. Its totient is φ = 88251918048.

The previous prime is 91409645969. The next prime is 91409646131. The reversal of 91409646011 is 11064690419.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91409646011 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 91409646011.

It is not an unprimeable number, because it can be changed into a prime (91409646611) 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, 399845 + ... + 585401.

It is an arithmetic number, because the mean of its divisors is an integer number (11820972390).

Almost surely, 2^91409646011 is an apocalyptic number.

91409646011 is a deficient number, since it is larger than the sum of its proper divisors (3158133109).

91409646011 is a wasteful number, since it uses less digits than its factorization.

91409646011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202573.

The product of its (nonzero) digits is 46656, while the sum is 41.

The spelling of 91409646011 in words is "ninety-one billion, four hundred nine million, six hundred forty-six thousand, eleven".