91212456196 has 9 divisors (see below), whose sum is σ = 159622855399. Its totient is φ = 45605926084.

The previous prime is 91212456169. The next prime is 91212456199. The reversal of 91212456196 is 69165421219.

The square root of 91212456196 is 302014.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91212456199) by changing a digit.

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 2 ways as a sum of consecutive naturals, for example, 528525 + ... + 679531.

Almost surely, 2^91212456196 is an apocalyptic number.

91212456196 is the 302014-th square number.

It is an amenable number.

91212456196 is a deficient number, since it is larger than the sum of its proper divisors (68410399203).

91212456196 is an frugal number, since it uses more digits than its factorization.

91212456196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302018 (or 151009 counting only the distinct ones).

The product of its digits is 233280, while the sum is 46.

The spelling of 91212456196 in words is "ninety-one billion, two hundred twelve million, four hundred fifty-six thousand, one hundred ninety-six".