91859797076 has 24 divisors (see below), whose sum is σ = 161156311680. Its totient is φ = 45815277312.

The previous prime is 91859797063. The next prime is 91859797121. The reversal of 91859797076 is 67079795819.

It is a junction number, because it is equal to n+sod(n) for n = 91859796997 and 91859797015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2726405 + ... + 2759891.

It is an arithmetic number, because the mean of its divisors is an integer number (6714846320).

Almost surely, 2^91859797076 is an apocalyptic number.

It is an amenable number.

91859797076 is a deficient number, since it is larger than the sum of its proper divisors (69296514604).

91859797076 is a wasteful number, since it uses less digits than its factorization.

91859797076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35183 (or 35181 counting only the distinct ones).

The product of its (nonzero) digits is 60011280, while the sum is 68.

The spelling of 91859797076 in words is "ninety-one billion, eight hundred fifty-nine million, seven hundred ninety-seven thousand, seventy-six".