69828647429 has 2 divisors, whose sum is σ = 69828647430. Its totient is φ = 69828647428.

The previous prime is 69828647393. The next prime is 69828647461. The reversal of 69828647429 is 92474682896.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51393796804 + 18434850625 = 226702^2 + 135775^2 .

It is a cyclic number.

It is not a de Polignac number, because 69828647429 - 2²⁰ = 69827598853 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (69828647479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34914323714 + 34914323715.

It is an arithmetic number, because the mean of its divisors is an integer number (34914323715).

Almost surely, 2^69828647429 is an apocalyptic number.

It is an amenable number.

69828647429 is a deficient number, since it is larger than the sum of its proper divisors (1).

69828647429 is an equidigital number, since it uses as much as digits as its factorization.

69828647429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 83607552, while the sum is 65.

The spelling of 69828647429 in words is "sixty-nine billion, eight hundred twenty-eight million, six hundred forty-seven thousand, four hundred twenty-nine".