91147232836 has 27 divisors (see below), whose sum is σ = 175339375743. Its totient is φ = 41427541320.

The previous prime is 91147232833. The next prime is 91147232837. The reversal of 91147232836 is 63823274119.

The square root of 91147232836 is 301906.

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 (91147232831) 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, 6635071 + ... + 6648793.

Almost surely, 2^91147232836 is an apocalyptic number.

91147232836 is the 301906-th square number.

It is an amenable number.

91147232836 is a deficient number, since it is larger than the sum of its proper divisors (84192142907).

91147232836 is an equidigital number, since it uses as much as digits as its factorization.

91147232836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27472 (or 13736 counting only the distinct ones).

The product of its digits is 435456, while the sum is 46.

The spelling of 91147232836 in words is "ninety-one billion, one hundred forty-seven million, two hundred thirty-two thousand, eight hundred thirty-six".