91216530050 has 24 divisors (see below), whose sum is σ = 169691669172. Its totient is φ = 36480392000.

The previous prime is 91216529953. The next prime is 91216530091. The reversal of 91216530050 is 5003561219.

It can be written as a sum of positive squares in 6 ways, for example, as 209931121 + 91006598929 = 14489^2 + 301673^2 .

It is a junction number, because it is equal to n+sod(n) for n = 91216529989 and 91216530016.

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 11 ways as a sum of consecutive naturals, for example, 146540 + ... + 451560.

Almost surely, 2^91216530050 is an apocalyptic number.

91216530050 is a deficient number, since it is larger than the sum of its proper divisors (78475139122).

91216530050 is a wasteful number, since it uses less digits than its factorization.

91216530050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311014 (or 311009 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 32.

The spelling of 91216530050 in words is "ninety-one billion, two hundred sixteen million, five hundred thirty thousand, fifty".