12718537424737 has 4 divisors (see below), whose sum is σ = 12731689998016. Its totient is φ = 12705384851460.

The previous prime is 12718537424647. The next prime is 12718537424771. The reversal of 12718537424737 is 73742473581721.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12718537424737 is a prime.

It is a super-2 number, since 2×12718537424737² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12718537404737) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6576285189 + ... + 6576287122.

It is an arithmetic number, because the mean of its divisors is an integer number (3182922499504).

Almost surely, 2^{12718537424737} is an apocalyptic number.

It is an amenable number.

12718537424737 is a deficient number, since it is larger than the sum of its proper divisors (13152573279).

12718537424737 is an equidigital number, since it uses as much as digits as its factorization.

12718537424737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13152573278.

The product of its digits is 55319040, while the sum is 61.

The spelling of 12718537424737 in words is "twelve trillion, seven hundred eighteen billion, five hundred thirty-seven million, four hundred twenty-four thousand, seven hundred thirty-seven".