91103621094 has 48 divisors (see below), whose sum is σ = 208104839280. Its totient is φ = 28724613120.

The previous prime is 91103621093. The next prime is 91103621131. The reversal of 91103621094 is 49012630119.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91103621093) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11434 + ... + 427010.

It is an arithmetic number, because the mean of its divisors is an integer number (4335517485).

Almost surely, 2^91103621094 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91103621094, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104052419640).

91103621094 is an abundant number, since it is smaller than the sum of its proper divisors (117001218186).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91103621094 is a wasteful number, since it uses less digits than its factorization.

91103621094 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416245 (or 416242 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The spelling of 91103621094 in words is "ninety-one billion, one hundred three million, six hundred twenty-one thousand, ninety-four".