97529662809 has 12 divisors (see below), whose sum is σ = 145733979300. Its totient is φ = 62777713824.

The previous prime is 97529662759. The next prime is 97529662849. The reversal of 97529662809 is 90826692579.

It can be written as a sum of positive squares in 2 ways, for example, as 63732517209 + 33797145600 = 252453^2 + 183840^2 .

It is not a de Polignac number, because 97529662809 - 2³¹ = 95382179161 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (97529662849) 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 in 11 ways as a sum of consecutive naturals, for example, 186838174 + ... + 186838695.

It is an arithmetic number, because the mean of its divisors is an integer number (12144498275).

Almost surely, 2^97529662809 is an apocalyptic number.

It is an amenable number.

97529662809 is a deficient number, since it is larger than the sum of its proper divisors (48204316491).

97529662809 is a wasteful number, since it uses less digits than its factorization.

97529662809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373676904 (or 373676901 counting only the distinct ones).

The product of its (nonzero) digits is 29393280, while the sum is 63.

The spelling of 97529662809 in words is "ninety-seven billion, five hundred twenty-nine million, six hundred sixty-two thousand, eight hundred nine".