97945070987 has 2 divisors, whose sum is σ = 97945070988. Its totient is φ = 97945070986.

The previous prime is 97945070969. The next prime is 97945070999. The reversal of 97945070987 is 78907054979.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 97945070987 - 2³² = 93650103691 is a prime.

It is not a weakly prime, because it can be changed into another prime (97945070947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48972535493 + 48972535494.

It is an arithmetic number, because the mean of its divisors is an integer number (48972535494).

Almost surely, 2^97945070987 is an apocalyptic number.

97945070987 is a deficient number, since it is larger than the sum of its proper divisors (1).

97945070987 is an equidigital number, since it uses as much as digits as its factorization.

97945070987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40007520, while the sum is 65.

The spelling of 97945070987 in words is "ninety-seven billion, nine hundred forty-five million, seventy thousand, nine hundred eighty-seven".