13005125815828 has 12 divisors (see below), whose sum is σ = 23070736892980. Its totient is φ = 6413486703552.

The previous prime is 13005125815823. The next prime is 13005125815859. The reversal of 13005125815828 is 82851852150031.

It can be written as a sum of positive squares in 2 ways, for example, as 9286329833104 + 3718795982724 = 3047348^2 + 1928418^2 .

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13005125815823) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22269050763 + ... + 22269051346.

Almost surely, 2^{13005125815828} is an apocalyptic number.

It is an amenable number.

13005125815828 is a deficient number, since it is larger than the sum of its proper divisors (10065611077152).

13005125815828 is a wasteful number, since it uses less digits than its factorization.

13005125815828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44538102186 (or 44538102184 counting only the distinct ones).

The product of its (nonzero) digits is 768000, while the sum is 49.

Adding to 13005125815828 its reverse (82851852150031), we get a palindrome (95856977965859).

The spelling of 13005125815828 in words is "thirteen trillion, five billion, one hundred twenty-five million, eight hundred fifteen thousand, eight hundred twenty-eight".