97561055511443 has 2 divisors, whose sum is σ = 97561055511444. Its totient is φ = 97561055511442.

The previous prime is 97561055511379. The next prime is 97561055511503. The reversal of 97561055511443 is 34411555016579.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 97561055511443 - 2⁶ = 97561055511379 is a prime.

It is not a weakly prime, because it can be changed into another prime (97561055511343) 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, 48780527755721 + 48780527755722.

It is an arithmetic number, because the mean of its divisors is an integer number (48780527755722).

Almost surely, 2^{97561055511443} is an apocalyptic number.

97561055511443 is a deficient number, since it is larger than the sum of its proper divisors (1).

97561055511443 is an equidigital number, since it uses as much as digits as its factorization.

97561055511443 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11340000, while the sum is 56.

The spelling of 97561055511443 in words is "ninety-seven trillion, five hundred sixty-one billion, fifty-five million, five hundred eleven thousand, four hundred forty-three".