91870100027 has 8 divisors (see below), whose sum is σ = 99646766352. Its totient is φ = 84357049600.

The previous prime is 91870100017. The next prime is 91870100039. The reversal of 91870100027 is 72000107819.

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-91870100027 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 91870100027.

It is not an unprimeable number, because it can be changed into a prime (91870100017) 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, 65903249 + ... + 65904642.

It is an arithmetic number, because the mean of its divisors is an integer number (12455845794).

Almost surely, 2^91870100027 is an apocalyptic number.

91870100027 is a deficient number, since it is larger than the sum of its proper divisors (7776666325).

91870100027 is a wasteful number, since it uses less digits than its factorization.

91870100027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131807949.

The product of its (nonzero) digits is 7056, while the sum is 35.

The spelling of 91870100027 in words is "ninety-one billion, eight hundred seventy million, one hundred thousand, twenty-seven".