91147988414 has 16 divisors (see below), whose sum is σ = 163047333888. Its totient is φ = 37365013752.

The previous prime is 91147988411. The next prime is 91147988453. The reversal of 91147988414 is 41488974119.

It is a self number, because there is not a number n which added to its sum of digits gives 91147988414.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91147988411) 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, 141533822 + ... + 141534465.

It is an arithmetic number, because the mean of its divisors is an integer number (10190458368).

Almost surely, 2^91147988414 is an apocalyptic number.

91147988414 is a deficient number, since it is larger than the sum of its proper divisors (71899345474).

91147988414 is a wasteful number, since it uses less digits than its factorization.

91147988414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283068319.

The product of its digits is 2322432, while the sum is 56.

The spelling of 91147988414 in words is "ninety-one billion, one hundred forty-seven million, nine hundred eighty-eight thousand, four hundred fourteen".