29698717661 has 2 divisors, whose sum is σ = 29698717662. Its totient is φ = 29698717660.

The previous prime is 29698717651. The next prime is 29698717669. The reversal of 29698717661 is 16671789692.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17084058436 + 12614659225 = 130706^2 + 112315^2 .

It is a cyclic number.

It is not a de Polignac number, because 29698717661 - 2⁶ = 29698717597 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 29698717594 and 29698717603.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (29698717669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14849358830 + 14849358831.

It is an arithmetic number, because the mean of its divisors is an integer number (14849358831).

Almost surely, 2^29698717661 is an apocalyptic number.

It is an amenable number.

29698717661 is a deficient number, since it is larger than the sum of its proper divisors (1).

29698717661 is an equidigital number, since it uses as much as digits as its factorization.

29698717661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13716864, while the sum is 62.

The spelling of 29698717661 in words is "twenty-nine billion, six hundred ninety-eight million, seven hundred seventeen thousand, six hundred sixty-one".