97505565611 has 2 divisors, whose sum is σ = 97505565612. Its totient is φ = 97505565610.

The previous prime is 97505565601. The next prime is 97505565697. The reversal of 97505565611 is 11656550579.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 97505565611 - 2²⁶ = 97438456747 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 97505565611.

It is not a weakly prime, because it can be changed into another prime (97505565601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48752782805 + 48752782806.

It is an arithmetic number, because the mean of its divisors is an integer number (48752782806).

Almost surely, 2^97505565611 is an apocalyptic number.

97505565611 is a deficient number, since it is larger than the sum of its proper divisors (1).

97505565611 is an equidigital number, since it uses as much as digits as its factorization.

97505565611 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1417500, while the sum is 50.

The spelling of 97505565611 in words is "ninety-seven billion, five hundred five million, five hundred sixty-five thousand, six hundred eleven".