13001251520 has 28 divisors (see below), whose sum is σ = 30959230944. Its totient is φ = 5200500480.

The previous prime is 13001251489. The next prime is 13001251553. The reversal of 13001251520 is 2515210031.

It is a happy number.

13001251520 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 13001251492 and 13001251501.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20314136 + ... + 20314775.

Almost surely, 2^13001251520 is an apocalyptic number.

13001251520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13001251520 is an abundant number, since it is smaller than the sum of its proper divisors (17957979424).

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

13001251520 is an equidigital number, since it uses as much as digits as its factorization.

13001251520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40628928 (or 40628918 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 20.

Adding to 13001251520 its reverse (2515210031), we get a palindrome (15516461551).

The spelling of 13001251520 in words is "thirteen billion, one million, two hundred fifty-one thousand, five hundred twenty".