12737538731 has 2 divisors, whose sum is σ = 12737538732. Its totient is φ = 12737538730.

The previous prime is 12737538703. The next prime is 12737538769. The reversal of 12737538731 is 13783573721.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12737538731 is a prime.

It is a super-2 number, since 2×12737538731² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12737538701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6368769365 + 6368769366.

It is an arithmetic number, because the mean of its divisors is an integer number (6368769366).

Almost surely, 2^12737538731 is an apocalyptic number.

12737538731 is a deficient number, since it is larger than the sum of its proper divisors (1).

12737538731 is an equidigital number, since it uses as much as digits as its factorization.

12737538731 is an evil number, because the sum of its binary digits is even.

The product of its digits is 740880, while the sum is 47.

The spelling of 12737538731 in words is "twelve billion, seven hundred thirty-seven million, five hundred thirty-eight thousand, seven hundred thirty-one".