89678205404497 has 2 divisors, whose sum is σ = 89678205404498. Its totient is φ = 89678205404496.

The previous prime is 89678205404477. The next prime is 89678205404549. The reversal of 89678205404497 is 79440450287698.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 76996693850176 + 12681511554321 = 8774776^2 + 3561111^2 .

It is a cyclic number.

It is not a de Polignac number, because 89678205404497 - 2⁷ = 89678205404369 is a prime.

It is not a weakly prime, because it can be changed into another prime (89678205404407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44839102702248 + 44839102702249.

It is an arithmetic number, because the mean of its divisors is an integer number (44839102702249).

Almost surely, 2^{89678205404497} is an apocalyptic number.

It is an amenable number.

89678205404497 is a deficient number, since it is larger than the sum of its proper divisors (1).

89678205404497 is an equidigital number, since it uses as much as digits as its factorization.

89678205404497 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 975421440, while the sum is 73.

The spelling of 89678205404497 in words is "eighty-nine trillion, six hundred seventy-eight billion, two hundred five million, four hundred four thousand, four hundred ninety-seven".