1323452003520 has 112 divisors (see below), whose sum is σ = 4203754587648. Its totient is φ = 352769817600.

The previous prime is 1323452003509. The next prime is 1323452003543. The reversal of 1323452003520 is 253002543231.

It is a super-2 number, since 2×1323452003520² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1963767 + ... + 2550153.

It is an arithmetic number, because the mean of its divisors is an integer number (37533523104).

Almost surely, 2^{1323452003520} is an apocalyptic number.

1323452003520 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 1323452003520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2101877293824).

1323452003520 is an abundant number, since it is smaller than the sum of its proper divisors (2880302584128).

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

1323452003520 is a wasteful number, since it uses less digits than its factorization.

1323452003520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 588758 (or 588748 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 30.

Adding to 1323452003520 its reverse (253002543231), we get a palindrome (1576454546751).

The spelling of 1323452003520 in words is "one trillion, three hundred twenty-three billion, four hundred fifty-two million, three thousand, five hundred twenty".