1321794389132 has 48 divisors (see below), whose sum is σ = 2676213980160. Its totient is φ = 559496149632.

The previous prime is 1321794389107. The next prime is 1321794389183. The reversal of 1321794389132 is 2319834971231.

It is a happy number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 8120813 + ... + 8281979.

It is an arithmetic number, because the mean of its divisors is an integer number (55754457920).

Almost surely, 2^{1321794389132} is an apocalyptic number.

It is an amenable number.

1321794389132 is an abundant number, since it is smaller than the sum of its proper divisors (1354419591028).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1321794389132 is a wasteful number, since it uses less digits than its factorization.

1321794389132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164790 (or 164788 counting only the distinct ones).

The product of its digits is 1959552, while the sum is 53.

The spelling of 1321794389132 in words is "one trillion, three hundred twenty-one billion, seven hundred ninety-four million, three hundred eighty-nine thousand, one hundred thirty-two".