12912709637 has 2 divisors, whose sum is σ = 12912709638. Its totient is φ = 12912709636.

The previous prime is 12912709631. The next prime is 12912709687. The reversal of 12912709637 is 73690721921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7253758561 + 5658951076 = 85169^2 + 75226^2 .

It is a cyclic number.

It is not a de Polignac number, because 12912709637 - 2¹² = 12912705541 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12912709591 and 12912709600.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12912709631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6456354818 + 6456354819.

It is an arithmetic number, because the mean of its divisors is an integer number (6456354819).

Almost surely, 2^12912709637 is an apocalyptic number.

It is an amenable number.

12912709637 is a deficient number, since it is larger than the sum of its proper divisors (1).

12912709637 is an equidigital number, since it uses as much as digits as its factorization.

12912709637 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 285768, while the sum is 47.

The spelling of 12912709637 in words is "twelve billion, nine hundred twelve million, seven hundred nine thousand, six hundred thirty-seven".