12929617637 has 2 divisors, whose sum is σ = 12929617638. Its totient is φ = 12929617636.

The previous prime is 12929617573. The next prime is 12929617681. The reversal of 12929617637 is 73671692921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7354606081 + 5575011556 = 85759^2 + 74666^2 .

It is a cyclic number.

It is not a de Polignac number, because 12929617637 - 2⁶ = 12929617573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12929613637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6464808818 + 6464808819.

It is an arithmetic number, because the mean of its divisors is an integer number (6464808819).

Almost surely, 2^12929617637 is an apocalyptic number.

It is an amenable number.

12929617637 is a deficient number, since it is larger than the sum of its proper divisors (1).

12929617637 is an equidigital number, since it uses as much as digits as its factorization.

12929617637 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1714608, while the sum is 53.

The spelling of 12929617637 in words is "twelve billion, nine hundred twenty-nine million, six hundred seventeen thousand, six hundred thirty-seven".