1321795142604 has 24 divisors (see below), whose sum is σ = 3426876295920. Its totient is φ = 440598380832.

The previous prime is 1321795142579. The next prime is 1321795142609. The reversal of 1321795142604 is 4062415971231.

1321795142604 is a `hidden beast` number, since 1 + 3 + 2 + 1 + 79 + 514 + 2 + 60 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 1321795142604.

It is not an unprimeable number, because it can be changed into a prime (1321795142609) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 6119421849 + ... + 6119422064.

It is an arithmetic number, because the mean of its divisors is an integer number (142786512330).

Almost surely, 2^{1321795142604} is an apocalyptic number.

It is an amenable number.

1321795142604 is an abundant number, since it is smaller than the sum of its proper divisors (2105081153316).

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

1321795142604 is a wasteful number, since it uses less digits than its factorization.

1321795142604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12238843926 (or 12238843918 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The spelling of 1321795142604 in words is "one trillion, three hundred twenty-one billion, seven hundred ninety-five million, one hundred forty-two thousand, six hundred four".