97687488920233 has 2 divisors, whose sum is σ = 97687488920234. Its totient is φ = 97687488920232.

The previous prime is 97687488920209. The next prime is 97687488920393. The reversal of 97687488920233 is 33202988478679.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80628672546409 + 17058816373824 = 8979347^2 + 4130232^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-97687488920233 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 97687488920233.

It is not a weakly prime, because it can be changed into another prime (97687488926233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48843744460116 + 48843744460117.

It is an arithmetic number, because the mean of its divisors is an integer number (48843744460117).

Almost surely, 2^{97687488920233} is an apocalyptic number.

It is an amenable number.

97687488920233 is a deficient number, since it is larger than the sum of its proper divisors (1).

97687488920233 is an equidigital number, since it uses as much as digits as its factorization.

97687488920233 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1755758592, while the sum is 76.

The spelling of 97687488920233 in words is "ninety-seven trillion, six hundred eighty-seven billion, four hundred eighty-eight million, nine hundred twenty thousand, two hundred thirty-three".