91240470995752 has 128 divisors (see below), whose sum is σ = 194276490508800. Its totient is φ = 39823823757312.

The previous prime is 91240470995747. The next prime is 91240470995759. The reversal of 91240470995752 is 25759907404219.

It is not an unprimeable number, because it can be changed into a prime (91240470995759) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5935103938 + ... + 5935119310.

It is an arithmetic number, because the mean of its divisors is an integer number (1517785082100).

Almost surely, 2^{91240470995752} 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 91240470995752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97138245254400).

91240470995752 is an abundant number, since it is smaller than the sum of its proper divisors (103036019513048).

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

91240470995752 is a wasteful number, since it uses less digits than its factorization.

91240470995752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20547 (or 20543 counting only the distinct ones).

The product of its (nonzero) digits is 57153600, while the sum is 64.

The spelling of 91240470995752 in words is "ninety-one trillion, two hundred forty billion, four hundred seventy million, nine hundred ninety-five thousand, seven hundred fifty-two".