1520042542544 has 10 divisors (see below), whose sum is σ = 2945082426210. Its totient is φ = 760021271264.

The previous prime is 1520042542537. The next prime is 1520042542549. The reversal of 1520042542544 is 4452452400251.

It can be written as a sum of positive squares in only one way, i.e., 1260949326400 + 259093216144 = 1122920^2 + 509012^2 .

It is a super-2 number, since 2×1520042542544² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1520042542498 and 1520042542507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1520042542549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 47501329439 + ... + 47501329470.

It is an arithmetic number, because the mean of its divisors is an integer number (294508242621).

Almost surely, 2^{1520042542544} is an apocalyptic number.

It is an amenable number.

1520042542544 is a deficient number, since it is larger than the sum of its proper divisors (1425039883666).

1520042542544 is an equidigital number, since it uses as much as digits as its factorization.

1520042542544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95002658917 (or 95002658911 counting only the distinct ones).

The product of its (nonzero) digits is 256000, while the sum is 38.

Adding to 1520042542544 its reverse (4452452400251), we get a palindrome (5972494942795).

The spelling of 1520042542544 in words is "one trillion, five hundred twenty billion, forty-two million, five hundred forty-two thousand, five hundred forty-four".