13557279744 has 220 divisors, whose sum is σ = 41016967200. Its totient is φ = 4459732992.

The previous prime is 13557279739. The next prime is 13557279761. The reversal of 13557279744 is 44797275531.

13557279744 is a `hidden beast` number, since 13 + 557 + 2 + 7 + 9 + 74 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 6551542 + ... + 6553610.

It is an arithmetic number, because the mean of its divisors is an integer number (186440760).

Almost surely, 2^13557279744 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13557279744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20508483600).

13557279744 is an abundant number, since it is smaller than the sum of its proper divisors (27459687456).

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

13557279744 is an equidigital number, since it uses as much as digits as its factorization.

13557279744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2180 (or 2153 counting only the distinct ones).

The product of its digits is 7408800, while the sum is 54.

The spelling of 13557279744 in words is "thirteen billion, five hundred fifty-seven million, two hundred seventy-nine thousand, seven hundred forty-four".