1323707387904 has 416 divisors, whose sum is σ = 4289289886080. Its totient is φ = 400077619200.

The previous prime is 1323707387897. The next prime is 1323707387909. The reversal of 1323707387904 is 4097837073231.

1323707387904 is a `hidden beast` number, since 132 + 370 + 73 + 8 + 79 + 0 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1323707387909) 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, 555944794 + ... + 555947174.

Almost surely, 2^{1323707387904} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1323707387904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2144644943040).

1323707387904 is an abundant number, since it is smaller than the sum of its proper divisors (2965582498176).

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

1323707387904 is a wasteful number, since it uses less digits than its factorization.

1323707387904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2882 (or 2854 counting only the distinct ones).

The product of its (nonzero) digits is 5334336, while the sum is 54.

The spelling of 1323707387904 in words is "one trillion, three hundred twenty-three billion, seven hundred seven million, three hundred eighty-seven thousand, nine hundred four".