1323555423040 has 112 divisors (see below), whose sum is σ = 3190816722240. Its totient is φ = 522858659840.

The previous prime is 1323555423019. The next prime is 1323555423119. The reversal of 1323555423040 is 403245553231.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93988800 + ... + 94002880.

It is an arithmetic number, because the mean of its divisors is an integer number (28489435020).

Almost surely, 2^{1323555423040} is an apocalyptic number.

1323555423040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1323555423040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1595408361120).

1323555423040 is an abundant number, since it is smaller than the sum of its proper divisors (1867261299200).

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

1323555423040 is a wasteful number, since it uses less digits than its factorization.

1323555423040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17720 (or 17710 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 37.

The spelling of 1323555423040 in words is "one trillion, three hundred twenty-three billion, five hundred fifty-five million, four hundred twenty-three thousand, forty".