91769445012 has 48 divisors (see below), whose sum is σ = 247666954752. Its totient is φ = 25903937760.

The previous prime is 91769444993. The next prime is 91769445037. The reversal of 91769445012 is 21054496719.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6574314 + ... + 6588257.

It is an arithmetic number, because the mean of its divisors is an integer number (5159728224).

Almost surely, 2^91769445012 is an apocalyptic number.

It is an amenable number.

91769445012 is an abundant number, since it is smaller than the sum of its proper divisors (155897509740).

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

91769445012 is a wasteful number, since it uses less digits than its factorization.

91769445012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13162668 (or 13162666 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 48.

The spelling of 91769445012 in words is "ninety-one billion, seven hundred sixty-nine million, four hundred forty-five thousand, twelve".