91328466436 has 27 divisors (see below), whose sum is σ = 162954433173. Its totient is φ = 44786929200.

The previous prime is 91328466433. The next prime is 91328466469. The reversal of 91328466436 is 63466482319.

The square root of 91328466436 is 302206.

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

It can be written as a sum of positive squares in only one way, i.e., 65838428100 + 25490038336 = 256590^2 + 159656^2 .

It is a Smith number, since the sum of its digits (52) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91328466433) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 32032411 + ... + 32035261.

Almost surely, 2^91328466436 is an apocalyptic number.

91328466436 is the 302206-th square number.

It is an amenable number.

91328466436 is a deficient number, since it is larger than the sum of its proper divisors (71625966737).

91328466436 is an frugal number, since it uses more digits than its factorization.

91328466436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5812 (or 2906 counting only the distinct ones).

The product of its digits is 4478976, while the sum is 52.

The spelling of 91328466436 in words is "ninety-one billion, three hundred twenty-eight million, four hundred sixty-six thousand, four hundred thirty-six".