1320511015452 has 72 divisors (see below), whose sum is σ = 3276670042240. Its totient is φ = 413826174720.

The previous prime is 1320511015451. The next prime is 1320511015511. The reversal of 1320511015452 is 2545101150231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320511015451) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 2979927 + ... + 3394257.

Almost surely, 2^{1320511015452} is an apocalyptic number.

1320511015452 is a gapful number since it is divisible by the number (12) 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 1320511015452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1638335021120).

1320511015452 is an abundant number, since it is smaller than the sum of its proper divisors (1956159026788).

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

1320511015452 is a wasteful number, since it uses less digits than its factorization.

1320511015452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415291 (or 415272 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 30.

Adding to 1320511015452 its reverse (2545101150231), we get a palindrome (3865612165683).

The spelling of 1320511015452 in words is "one trillion, three hundred twenty billion, five hundred eleven million, fifteen thousand, four hundred fifty-two".