91886267044 has 96 divisors (see below), whose sum is σ = 201371184000. Its totient is φ = 36041717760.

The previous prime is 91886267021. The next prime is 91886267071. The reversal of 91886267044 is 44076268819.

It is a happy number.

It is a Smith number, since the sum of its digits (55) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 1417167 + ... + 1480585.

It is an arithmetic number, because the mean of its divisors is an integer number (2097616500).

Almost surely, 2^91886267044 is an apocalyptic number.

It is an amenable number.

91886267044 is an abundant number, since it is smaller than the sum of its proper divisors (109484916956).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91886267044 is a wasteful number, since it uses less digits than its factorization.

91886267044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63613 (or 63611 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 55.

The spelling of 91886267044 in words is "ninety-one billion, eight hundred eighty-six million, two hundred sixty-seven thousand, forty-four".