1091920491232 has 12 divisors (see below), whose sum is σ = 2149718467176. Its totient is φ = 545960245600.

The previous prime is 1091920491229. The next prime is 1091920491239. The reversal of 1091920491232 is 2321940291901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1091920491239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17061257644 + ... + 17061257707.

It is an arithmetic number, because the mean of its divisors is an integer number (179143205598).

Almost surely, 2^{1091920491232} is an apocalyptic number.

It is an amenable number.

1091920491232 is a deficient number, since it is larger than the sum of its proper divisors (1057797975944).

1091920491232 is an equidigital number, since it uses as much as digits as its factorization.

1091920491232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34122515361 (or 34122515353 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 43.

The spelling of 1091920491232 in words is "one trillion, ninety-one billion, nine hundred twenty million, four hundred ninety-one thousand, two hundred thirty-two".