91782717048 has 192 divisors, whose sum is σ = 284672793600. Its totient is φ = 26459136000.

The previous prime is 91782717043. The next prime is 91782717067. The reversal of 91782717048 is 84071728719.

It is a junction number, because it is equal to n+sod(n) for n = 91782716985 and 91782717003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91782717043) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1416888 + ... + 1480248.

It is an arithmetic number, because the mean of its divisors is an integer number (1482670800).

Almost surely, 2^91782717048 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 91782717048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (142336396800).

91782717048 is an abundant number, since it is smaller than the sum of its proper divisors (192890076552).

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

91782717048 is a wasteful number, since it uses less digits than its factorization.

91782717048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63474 (or 63467 counting only the distinct ones).

The product of its (nonzero) digits is 1580544, while the sum is 54.

The spelling of 91782717048 in words is "ninety-one billion, seven hundred eighty-two million, seven hundred seventeen thousand, forty-eight".