13247357760 has 1344 divisors, whose sum is σ = 61294060800. Its totient is φ = 2666151936.

The previous prime is 13247357759. The next prime is 13247357777. The reversal of 13247357760 is 6775374231.

13247357760 is a `hidden beast` number, since 1 + 3 + 2 + 4 + 73 + 577 + 6 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (1344).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 159606679 + ... + 159606761.

It is an arithmetic number, because the mean of its divisors is an integer number (45605700).

Almost surely, 2^13247357760 is an apocalyptic number.

13247357760 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13247357760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30647030400).

13247357760 is an abundant number, since it is smaller than the sum of its proper divisors (48046703040).

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

13247357760 is a wasteful number, since it uses less digits than its factorization.

13247357760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165 (or 142 counting only the distinct ones).

The product of its (nonzero) digits is 740880, while the sum is 45.

The spelling of 13247357760 in words is "thirteen billion, two hundred forty-seven million, three hundred fifty-seven thousand, seven hundred sixty".