91100468787 has 8 divisors (see below), whose sum is σ = 121479965904. Its totient is φ = 60727308768.

The previous prime is 91100468761. The next prime is 91100468881. The reversal of 91100468787 is 78786400119.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 91100468787 - 2²³ = 91092080179 is a prime.

It is a super-2 number, since 2×91100468787² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (91100468387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1550628 + ... + 1608305.

It is an arithmetic number, because the mean of its divisors is an integer number (15184995738).

Almost surely, 2^91100468787 is an apocalyptic number.

91100468787 is a deficient number, since it is larger than the sum of its proper divisors (30379497117).

91100468787 is a wasteful number, since it uses less digits than its factorization.

91100468787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3168549.

The product of its (nonzero) digits is 677376, while the sum is 51.

The spelling of 91100468787 in words is "ninety-one billion, one hundred million, four hundred sixty-eight thousand, seven hundred eighty-seven".