91393660001 has 8 divisors (see below), whose sum is σ = 104451822720. Its totient is φ = 78335978688.

The previous prime is 91393659971. The next prime is 91393660009. The reversal of 91393660001 is 10006639319.

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-91393660001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (91393660009) 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, 498905 + ... + 657033.

It is an arithmetic number, because the mean of its divisors is an integer number (13056477840).

Almost surely, 2^91393660001 is an apocalyptic number.

It is an amenable number.

91393660001 is a deficient number, since it is larger than the sum of its proper divisors (13058162719).

91393660001 is a wasteful number, since it uses less digits than its factorization.

91393660001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240703.

The product of its (nonzero) digits is 26244, while the sum is 38.

The spelling of 91393660001 in words is "ninety-one billion, three hundred ninety-three million, six hundred sixty thousand, one".