91201309663 has 8 divisors (see below), whose sum is σ = 94401439200. Its totient is φ = 88004863968.

The previous prime is 91201309643. The next prime is 91201309673. The reversal of 91201309663 is 36690310219.

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-91201309663 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91201309643) 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, 870531 + ... + 969652.

It is an arithmetic number, because the mean of its divisors is an integer number (11800179900).

Almost surely, 2^91201309663 is an apocalyptic number.

91201309663 is a deficient number, since it is larger than the sum of its proper divisors (3200129537).

91201309663 is a wasteful number, since it uses less digits than its factorization.

91201309663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1841921.

The product of its (nonzero) digits is 52488, while the sum is 40.

The spelling of 91201309663 in words is "ninety-one billion, two hundred one million, three hundred nine thousand, six hundred sixty-three".