91091100147 has 8 divisors (see below), whose sum is σ = 121457012160. Its totient is φ = 60726294120.

The previous prime is 91091100143. The next prime is 91091100173. The reversal of 91091100147 is 74100119019.

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

It is not a de Polignac number, because 91091100147 - 2² = 91091100143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (91091100143) 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, 60129 + ... + 431042.

It is an arithmetic number, because the mean of its divisors is an integer number (15182126520).

Almost surely, 2^91091100147 is an apocalyptic number.

91091100147 is a deficient number, since it is larger than the sum of its proper divisors (30365912013).

91091100147 is a wasteful number, since it uses less digits than its factorization.

91091100147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 552993.

The product of its (nonzero) digits is 2268, while the sum is 33.

The spelling of 91091100147 in words is "ninety-one billion, ninety-one million, one hundred thousand, one hundred forty-seven".