1245453335544 has 128 divisors (see below), whose sum is σ = 3434908654080. Its totient is φ = 373173696000.

The previous prime is 1245453335491. The next prime is 1245453335561. The reversal of 1245453335544 is 4455333545421.

It is a super-2 number, since 2×1245453335544² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1245453335493 and 1245453335502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20153797 + ... + 20215499.

It is an arithmetic number, because the mean of its divisors is an integer number (26835223860).

Almost surely, 2^{1245453335544} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1245453335544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1717454327040).

1245453335544 is an abundant number, since it is smaller than the sum of its proper divisors (2189455318536).

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

1245453335544 is a wasteful number, since it uses less digits than its factorization.

1245453335544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62581 (or 62577 counting only the distinct ones).

The product of its digits is 8640000, while the sum is 48.

The spelling of 1245453335544 in words is "one trillion, two hundred forty-five billion, four hundred fifty-three million, three hundred thirty-five thousand, five hundred forty-four".