13247211109540 has 48 divisors (see below), whose sum is σ = 27871033023792. Its totient is φ = 5289004740096.

The previous prime is 13247211109519. The next prime is 13247211109543. The reversal of 13247211109540 is 4590111274231.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 678725527104 + 12568485582436 = 823848^2 + 3545206^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13247211109493 and 13247211109502.

It is not an unprimeable number, because it can be changed into a prime (13247211109543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53292822 + ... + 53540818.

It is an arithmetic number, because the mean of its divisors is an integer number (580646521329).

Almost surely, 2^{13247211109540} is an apocalyptic number.

13247211109540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13247211109540 is an abundant number, since it is smaller than the sum of its proper divisors (14623821914252).

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

13247211109540 is a wasteful number, since it uses less digits than its factorization.

13247211109540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252976 (or 252974 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 40.

The spelling of 13247211109540 in words is "thirteen trillion, two hundred forty-seven billion, two hundred eleven million, one hundred nine thousand, five hundred forty".