97622786561 has 2 divisors, whose sum is σ = 97622786562. Its totient is φ = 97622786560.

The previous prime is 97622786551. The next prime is 97622786587. The reversal of 97622786561 is 16568722679.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55575233536 + 42047553025 = 235744^2 + 205055^2 .

It is an emirp because it is prime and its reverse (16568722679) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 97622786561 - 2⁶ = 97622786497 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 97622786561.

It is not a weakly prime, because it can be changed into another prime (97622786531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48811393280 + 48811393281.

It is an arithmetic number, because the mean of its divisors is an integer number (48811393281).

Almost surely, 2^97622786561 is an apocalyptic number.

It is an amenable number.

97622786561 is a deficient number, since it is larger than the sum of its proper divisors (1).

97622786561 is an equidigital number, since it uses as much as digits as its factorization.

97622786561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15240960, while the sum is 59.

The spelling of 97622786561 in words is "ninety-seven billion, six hundred twenty-two million, seven hundred eighty-six thousand, five hundred sixty-one".