97809280433 has 2 divisors, whose sum is σ = 97809280434. Its totient is φ = 97809280432.

The previous prime is 97809280369. The next prime is 97809280451. The reversal of 97809280433 is 33408290879.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65919535504 + 31889744929 = 256748^2 + 178577^2 .

It is a cyclic number.

It is not a de Polignac number, because 97809280433 - 2⁶ = 97809280369 is a prime.

It is not a weakly prime, because it can be changed into another prime (97809280483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48904640216 + 48904640217.

It is an arithmetic number, because the mean of its divisors is an integer number (48904640217).

Almost surely, 2^97809280433 is an apocalyptic number.

It is an amenable number.

97809280433 is a deficient number, since it is larger than the sum of its proper divisors (1).

97809280433 is an equidigital number, since it uses as much as digits as its factorization.

97809280433 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2612736, while the sum is 53.

The spelling of 97809280433 in words is "ninety-seven billion, eight hundred nine million, two hundred eighty thousand, four hundred thirty-three".