1321938604704 has 48 divisors (see below), whose sum is σ = 3475805776128. Its totient is φ = 439920241152.

The previous prime is 1321938604667. The next prime is 1321938604739. The reversal of 1321938604704 is 4074068391231.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11284557 + ... + 11401100.

It is an arithmetic number, because the mean of its divisors is an integer number (72412620336).

Almost surely, 2^{1321938604704} is an apocalyptic number.

It is an amenable number.

1321938604704 is an abundant number, since it is smaller than the sum of its proper divisors (2153867171424).

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

1321938604704 is a wasteful number, since it uses less digits than its factorization.

1321938604704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22686277 (or 22686269 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 48.

The spelling of 1321938604704 in words is "one trillion, three hundred twenty-one billion, nine hundred thirty-eight million, six hundred four thousand, seven hundred four".