91755005556 has 48 divisors (see below), whose sum is σ = 227296770624. Its totient is φ = 28708686336.

The previous prime is 91755005549. The next prime is 91755005569. The reversal of 91755005556 is 65550055719.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 526830 + ... + 679013.

It is an arithmetic number, because the mean of its divisors is an integer number (4735349388).

Almost surely, 2^91755005556 is an apocalyptic number.

It is an amenable number.

91755005556 is an abundant number, since it is smaller than the sum of its proper divisors (135541765068).

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

91755005556 is a wasteful number, since it uses less digits than its factorization.

91755005556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1206240 (or 1206238 counting only the distinct ones).

The product of its (nonzero) digits is 1181250, while the sum is 48.

The spelling of 91755005556 in words is "ninety-one billion, seven hundred fifty-five million, five thousand, five hundred fifty-six".