91239746080 has 192 divisors, whose sum is σ = 252485468928. Its totient is φ = 30505144320.

The previous prime is 91239746077. The next prime is 91239746107. The reversal of 91239746080 is 8064793219.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 41079370 + ... + 41081590.

It is an arithmetic number, because the mean of its divisors is an integer number (1315028484).

Almost surely, 2^91239746080 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 91239746080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (126242734464).

91239746080 is an abundant number, since it is smaller than the sum of its proper divisors (161245722848).

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

91239746080 is a wasteful number, since it uses less digits than its factorization.

91239746080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3139 (or 3131 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 49.

The spelling of 91239746080 in words is "ninety-one billion, two hundred thirty-nine million, seven hundred forty-six thousand, eighty".