12617989933 has 2 divisors, whose sum is σ = 12617989934. Its totient is φ = 12617989932.

The previous prime is 12617989847. The next prime is 12617989949. The reversal of 12617989933 is 33998971621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7381730889 + 5236259044 = 85917^2 + 72362^2 .

It is a cyclic number.

It is not a de Polignac number, because 12617989933 - 2⁹ = 12617989421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12617989963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6308994966 + 6308994967.

It is an arithmetic number, because the mean of its divisors is an integer number (6308994967).

Almost surely, 2^12617989933 is an apocalyptic number.

It is an amenable number.

12617989933 is a deficient number, since it is larger than the sum of its proper divisors (1).

12617989933 is an equidigital number, since it uses as much as digits as its factorization.

12617989933 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4408992, while the sum is 58.

The spelling of 12617989933 in words is "twelve billion, six hundred seventeen million, nine hundred eighty-nine thousand, nine hundred thirty-three".