91207116816603 has 16 divisors (see below), whose sum is σ = 124462853387136. Its totient is φ = 59378635955520.

The previous prime is 91207116816527. The next prime is 91207116816617. The reversal of 91207116816603 is 30661861170219.

It is a happy number.

It is not a de Polignac number, because 91207116816603 - 2¹⁶ = 91207116751067 is a prime.

It is not an unprimeable number, because it can be changed into a prime (91207116816623) 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, 71056450 + ... + 72328647.

It is an arithmetic number, because the mean of its divisors is an integer number (7778928336696).

Almost surely, 2^{91207116816603} is an apocalyptic number.

91207116816603 is a deficient number, since it is larger than the sum of its proper divisors (33255736570533).

91207116816603 is a wasteful number, since it uses less digits than its factorization.

91207116816603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143390074.

The product of its (nonzero) digits is 653184, while the sum is 51.

The spelling of 91207116816603 in words is "ninety-one trillion, two hundred seven billion, one hundred sixteen million, eight hundred sixteen thousand, six hundred three".