13125444501530 has 16 divisors (see below), whose sum is σ = 23949441201384. Its totient is φ = 5178257556480.

The previous prime is 13125444501527. The next prime is 13125444501539. The reversal of 13125444501530 is 3510544452131.

It can be written as a sum of positive squares in 4 ways, for example, as 6227924527561 + 6897519973969 = 2495581^2 + 2626313^2 .

It is a super-3 number, since 3×13125444501530³ (a number of 40 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (13125444501539) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8990029751 + ... + 8990031210.

Almost surely, 2^{13125444501530} is an apocalyptic number.

13125444501530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13125444501530 is a deficient number, since it is larger than the sum of its proper divisors (10823996699854).

13125444501530 is a wasteful number, since it uses less digits than its factorization.

13125444501530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17980061041.

The product of its (nonzero) digits is 144000, while the sum is 38.

Adding to 13125444501530 its reverse (3510544452131), we get a palindrome (16635988953661).

The spelling of 13125444501530 in words is "thirteen trillion, one hundred twenty-five billion, four hundred forty-four million, five hundred one thousand, five hundred thirty".