13051224520 has 16 divisors (see below), whose sum is σ = 29365255260. Its totient is φ = 5220489792.

The previous prime is 13051224493. The next prime is 13051224541. The reversal of 13051224520 is 2542215031.

It can be written as a sum of positive squares in 2 ways, for example, as 12746861604 + 304362916 = 112902^2 + 17446^2 .

It is a super-2 number, since 2×13051224520² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 163140267 + ... + 163140346.

Almost surely, 2^13051224520 is an apocalyptic number.

13051224520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13051224520 is an abundant number, since it is smaller than the sum of its proper divisors (16314030740).

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

13051224520 is a wasteful number, since it uses less digits than its factorization.

13051224520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326280624 (or 326280620 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

Adding to 13051224520 its reverse (2542215031), we get a palindrome (15593439551).

The spelling of 13051224520 in words is "thirteen billion, fifty-one million, two hundred twenty-four thousand, five hundred twenty".