91099047355 has 8 divisors (see below), whose sum is σ = 112273420752. Its totient is φ = 70909528608.

The previous prime is 91099047317. The next prime is 91099047359. The reversal of 91099047355 is 55374099019.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 91099047355 - 2²⁹ = 90562176443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91099047359) 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, 246213457 + ... + 246213826.

It is an arithmetic number, because the mean of its divisors is an integer number (14034177594).

Almost surely, 2^91099047355 is an apocalyptic number.

91099047355 is a deficient number, since it is larger than the sum of its proper divisors (21174373397).

91099047355 is a wasteful number, since it uses less digits than its factorization.

91099047355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492427325.

The product of its (nonzero) digits is 1530900, while the sum is 52.

The spelling of 91099047355 in words is "ninety-one billion, ninety-nine million, forty-seven thousand, three hundred fifty-five".