202129128697 has 2 divisors, whose sum is σ = 202129128698. Its totient is φ = 202129128696.

The previous prime is 202129128623. The next prime is 202129128749. The reversal of 202129128697 is 796821921202.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 201723146496 + 405982201 = 449136^2 + 20149^2 .

It is a cyclic number.

It is not a de Polignac number, because 202129128697 - 2⁷ = 202129128569 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 202129128697.

It is not a weakly prime, because it can be changed into another prime (202129128497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101064564348 + 101064564349.

It is an arithmetic number, because the mean of its divisors is an integer number (101064564349).

Almost surely, 2^202129128697 is an apocalyptic number.

It is an amenable number.

202129128697 is a deficient number, since it is larger than the sum of its proper divisors (1).

202129128697 is an equidigital number, since it uses as much as digits as its factorization.

202129128697 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 435456, while the sum is 49.

The spelling of 202129128697 in words is "two hundred two billion, one hundred twenty-nine million, one hundred twenty-eight thousand, six hundred ninety-seven".