13061288538 has 24 divisors (see below), whose sum is σ = 28416893076. Its totient is φ = 4335696000.

The previous prime is 13061288521. The next prime is 13061288549. The reversal of 13061288538 is 83588216031.

13061288538 is a `hidden beast` number, since 1 + 30 + 6 + 1 + 2 + 88 + 538 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 9950661009 + 3110627529 = 99753^2 + 55773^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13061288493 and 13061288502.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1501113 + ... + 1509788.

Almost surely, 2^13061288538 is an apocalyptic number.

13061288538 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

13061288538 is an abundant number, since it is smaller than the sum of its proper divisors (15355604538).

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

13061288538 is a wasteful number, since it uses less digits than its factorization.

13061288538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3011150 (or 3011147 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 45.

The spelling of 13061288538 in words is "thirteen billion, sixty-one million, two hundred eighty-eight thousand, five hundred thirty-eight".