91103408628 has 24 divisors (see below), whose sum is σ = 212619496320. Its totient is φ = 30361392000.

The previous prime is 91103408609. The next prime is 91103408633. The reversal of 91103408628 is 82680430119.

It is a self number, because there is not a number n which added to its sum of digits gives 91103408628.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 741973 + ... + 855996.

It is an arithmetic number, because the mean of its divisors is an integer number (8859145680).

Almost surely, 2^91103408628 is an apocalyptic number.

It is an amenable number.

91103408628 is an abundant number, since it is smaller than the sum of its proper divisors (121516087692).

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

91103408628 is a wasteful number, since it uses less digits than its factorization.

91103408628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1602727 (or 1602725 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 42.

The spelling of 91103408628 in words is "ninety-one billion, one hundred three million, four hundred eight thousand, six hundred twenty-eight".