12740537418 has 32 divisors (see below), whose sum is σ = 30060625920. Its totient is φ = 3522728880.

The previous prime is 12740537389. The next prime is 12740537423. The reversal of 12740537418 is 81473504721.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 12740537418.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4891378 + ... + 4893981.

It is an arithmetic number, because the mean of its divisors is an integer number (939394560).

Almost surely, 2^12740537418 is an apocalyptic number.

12740537418 is an abundant number, since it is smaller than the sum of its proper divisors (17320088502).

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

12740537418 is a wasteful number, since it uses less digits than its factorization.

12740537418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9785402.

The product of its (nonzero) digits is 188160, while the sum is 42.

The spelling of 12740537418 in words is "twelve billion, seven hundred forty million, five hundred thirty-seven thousand, four hundred eighteen".