13660440542 has 16 divisors (see below), whose sum is σ = 24795421920. Its totient is φ = 5510093568.

The previous prime is 13660440539. The next prime is 13660440581. The reversal of 13660440542 is 24504406631.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28698167 + ... + 28698642.

It is an arithmetic number, because the mean of its divisors is an integer number (1549713870).

Almost surely, 2^13660440542 is an apocalyptic number.

13660440542 is a deficient number, since it is larger than the sum of its proper divisors (11134981378).

13660440542 is a wasteful number, since it uses less digits than its factorization.

13660440542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57396835.

The product of its (nonzero) digits is 69120, while the sum is 35.

The spelling of 13660440542 in words is "thirteen billion, six hundred sixty million, four hundred forty thousand, five hundred forty-two".