91799394103 has 8 divisors (see below), whose sum is σ = 97237093680. Its totient is φ = 86365887360.

The previous prime is 91799394091. The next prime is 91799394107. The reversal of 91799394103 is 30149399719.

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 a de Polignac number, because none of the positive numbers 2^k-91799394103 is a prime.

It is a super-2 number, since 2×91799394103² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91799394107) 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, 1003068 + ... + 1090753.

It is an arithmetic number, because the mean of its divisors is an integer number (12154636710).

Almost surely, 2^91799394103 is an apocalyptic number.

91799394103 is a deficient number, since it is larger than the sum of its proper divisors (5437699577).

91799394103 is a wasteful number, since it uses less digits than its factorization.

91799394103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2096417.

The product of its (nonzero) digits is 1653372, while the sum is 55.

The spelling of 91799394103 in words is "ninety-one billion, seven hundred ninety-nine million, three hundred ninety-four thousand, one hundred three".