13660244442 has 24 divisors (see below), whose sum is σ = 31873904244. Its totient is φ = 4203152064.

The previous prime is 13660244431. The next prime is 13660244449. The reversal of 13660244442 is 24444206631.

13660244442 is a `hidden beast` number, since 1 + 3 + 6 + 602 + 4 + 4 + 4 + 42 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 13649015241 + 11229201 = 116829^2 + 3351^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13660244397 and 13660244406.

It is not an unprimeable number, because it can be changed into a prime (13660244449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29188323 + ... + 29188790.

Almost surely, 2^13660244442 is an apocalyptic number.

13660244442 is an abundant number, since it is smaller than the sum of its proper divisors (18213659802).

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

13660244442 is a wasteful number, since it uses less digits than its factorization.

13660244442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58377134 (or 58377131 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 36.

The spelling of 13660244442 in words is "thirteen billion, six hundred sixty million, two hundred forty-four thousand, four hundred forty-two".