1245321311452 has 48 divisors (see below), whose sum is σ = 2303138396160. Its totient is φ = 588216853952.

The previous prime is 1245321311441. The next prime is 1245321311459. The reversal of 1245321311452 is 2541131235421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1245321311459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18541443 + ... + 18608485.

It is an arithmetic number, because the mean of its divisors is an integer number (47982049920).

Almost surely, 2^{1245321311452} is an apocalyptic number.

It is an amenable number.

1245321311452 is a deficient number, since it is larger than the sum of its proper divisors (1057817084708).

1245321311452 is a wasteful number, since it uses less digits than its factorization.

1245321311452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70530 (or 70528 counting only the distinct ones).

The product of its digits is 28800, while the sum is 34.

Adding to 1245321311452 its reverse (2541131235421), we get a palindrome (3786452546873).

The spelling of 1245321311452 in words is "one trillion, two hundred forty-five billion, three hundred twenty-one million, three hundred eleven thousand, four hundred fifty-two".