91626668032 has 44 divisors (see below), whose sum is σ = 183257486676. Its totient is φ = 45812285440.

The previous prime is 91626668027. The next prime is 91626668041. The reversal of 91626668032 is 23086662619.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2075307 + ... + 2118997.

It is an arithmetic number, because the mean of its divisors is an integer number (4164942879).

Almost surely, 2^91626668032 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 91626668032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91628743338).

91626668032 is an abundant number, since it is smaller than the sum of its proper divisors (91630818644).

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

91626668032 is an frugal number, since it uses more digits than its factorization.

91626668032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43733 (or 43693 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 49.

The spelling of 91626668032 in words is "ninety-one billion, six hundred twenty-six million, six hundred sixty-eight thousand, thirty-two".