91939735048 has 64 divisors (see below), whose sum is σ = 202448568960. Its totient is φ = 38316934656.

The previous prime is 91939735007. The next prime is 91939735067. The reversal of 91939735048 is 84053793919.

It is a junction number, because it is equal to n+sod(n) for n = 91939734983 and 91939735001.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4139140 + ... + 4161292.

It is an arithmetic number, because the mean of its divisors is an integer number (3163258890).

Almost surely, 2^91939735048 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91939735048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101224284480).

91939735048 is an abundant number, since it is smaller than the sum of its proper divisors (110508833912).

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

91939735048 is a wasteful number, since it uses less digits than its factorization.

91939735048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24206 (or 24202 counting only the distinct ones).

The product of its (nonzero) digits is 7348320, while the sum is 58.

The spelling of 91939735048 in words is "ninety-one billion, nine hundred thirty-nine million, seven hundred thirty-five thousand, forty-eight".