1245311453044 has 12 divisors (see below), whose sum is σ = 2199288576100. Its totient is φ = 616943288448.

The previous prime is 1245311453017. The next prime is 1245311453053. The reversal of 1245311453044 is 4403541135421.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 604447161444 + 640864291600 = 777462^2 + 800540^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1245311452994 and 1245311453012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1428109029 + ... + 1428109900.

Almost surely, 2^{1245311453044} is an apocalyptic number.

It is an amenable number.

1245311453044 is a deficient number, since it is larger than the sum of its proper divisors (953977123056).

1245311453044 is a wasteful number, since it uses less digits than its factorization.

1245311453044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2856219042 (or 2856219040 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 37.

Adding to 1245311453044 its reverse (4403541135421), we get a palindrome (5648852588465).

The spelling of 1245311453044 in words is "one trillion, two hundred forty-five billion, three hundred eleven million, four hundred fifty-three thousand, forty-four".