1191791325446 has 64 divisors (see below), whose sum is σ = 1980712673280. Its totient is φ = 535585115520.

The previous prime is 1191791325443. The next prime is 1191791325451. The reversal of 1191791325446 is 6445231971911.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1191791325443) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 85714931 + ... + 85728833.

It is an arithmetic number, because the mean of its divisors is an integer number (30948635520).

Almost surely, 2^{1191791325446} is an apocalyptic number.

1191791325446 is a deficient number, since it is larger than the sum of its proper divisors (788921347834).

1191791325446 is a wasteful number, since it uses less digits than its factorization.

1191791325446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15381.

The product of its digits is 1632960, while the sum is 53.

The spelling of 1191791325446 in words is "one trillion, one hundred ninety-one billion, seven hundred ninety-one million, three hundred twenty-five thousand, four hundred forty-six".