91532745556 has 48 divisors (see below), whose sum is σ = 197908681600. Its totient is φ = 36159239808.

The previous prime is 91532745517. The next prime is 91532745587. The reversal of 91532745556 is 65554723519.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2305371 + ... + 2344738.

Almost surely, 2^91532745556 is an apocalyptic number.

It is an amenable number.

91532745556 is an abundant number, since it is smaller than the sum of its proper divisors (106375936044).

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

91532745556 is a wasteful number, since it uses less digits than its factorization.

91532745556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4650176 (or 4650174 counting only the distinct ones).

The product of its digits is 5670000, while the sum is 52.

The spelling of 91532745556 in words is "ninety-one billion, five hundred thirty-two million, seven hundred forty-five thousand, five hundred fifty-six".