91191750103 has 16 divisors (see below), whose sum is σ = 96150542400. Its totient is φ = 86361972480.

The previous prime is 91191750101. The next prime is 91191750113. The reversal of 91191750103 is 30105719119.

It is a cyclic number.

It is not a de Polignac number, because 91191750103 - 2¹ = 91191750101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91191750101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 563275 + ... + 706867.

It is an arithmetic number, because the mean of its divisors is an integer number (6009408900).

Almost surely, 2^91191750103 is an apocalyptic number.

91191750103 is a deficient number, since it is larger than the sum of its proper divisors (4958792297).

91191750103 is a wasteful number, since it uses less digits than its factorization.

91191750103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144042.

The product of its (nonzero) digits is 8505, while the sum is 37.

The spelling of 91191750103 in words is "ninety-one billion, one hundred ninety-one million, seven hundred fifty thousand, one hundred three".