91436130487 has 16 divisors (see below), whose sum is σ = 104272297920. Its totient is φ = 79429888512.

The previous prime is 91436130481. The next prime is 91436130491. The reversal of 91436130487 is 78403163419.

It is not a de Polignac number, because 91436130487 - 2³ = 91436130479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91436130481) 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, 4137814 + ... + 4159852.

It is an arithmetic number, because the mean of its divisors is an integer number (6517018620).

Almost surely, 2^91436130487 is an apocalyptic number.

91436130487 is a deficient number, since it is larger than the sum of its proper divisors (12836167433).

91436130487 is a wasteful number, since it uses less digits than its factorization.

91436130487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40842.

The product of its (nonzero) digits is 435456, while the sum is 46.

The spelling of 91436130487 in words is "ninety-one billion, four hundred thirty-six million, one hundred thirty thousand, four hundred eighty-seven".