1245543312052 has 96 divisors (see below), whose sum is σ = 2426474363040. Its totient is φ = 555770142720.

The previous prime is 1245543312047. The next prime is 1245543312053. The reversal of 1245543312052 is 2502133455421.

It is a happy number.

It can be written as a sum of positive squares in 16 ways, for example, as 889034008996 + 356509303056 = 942886^2 + 597084^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1245543312053) 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, 115440274 + ... + 115451062.

It is an arithmetic number, because the mean of its divisors is an integer number (25275774615).

Almost surely, 2^{1245543312052} is an apocalyptic number.

It is an amenable number.

1245543312052 is a deficient number, since it is larger than the sum of its proper divisors (1180931050988).

1245543312052 is a wasteful number, since it uses less digits than its factorization.

1245543312052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11333 (or 11331 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 37.

Adding to 1245543312052 its reverse (2502133455421), we get a palindrome (3747676767473).

The spelling of 1245543312052 in words is "one trillion, two hundred forty-five billion, five hundred forty-three million, three hundred twelve thousand, fifty-two".