975601511505161 has 2 divisors, whose sum is σ = 975601511505162. Its totient is φ = 975601511505160.

The previous prime is 975601511505121. The next prime is 975601511505163. The reversal of 975601511505161 is 161505115106579.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 623766858855625 + 351834652649536 = 24975325^2 + 18757256^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-975601511505161 is a prime.

Together with 975601511505163, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (975601511505163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 487800755752580 + 487800755752581.

It is an arithmetic number, because the mean of its divisors is an integer number (487800755752581).

Almost surely, 2^{975601511505161} is an apocalyptic number.

It is an amenable number.

975601511505161 is a deficient number, since it is larger than the sum of its proper divisors (1).

975601511505161 is an equidigital number, since it uses as much as digits as its factorization.

975601511505161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1417500, while the sum is 53.

The spelling of 975601511505161 in words is "nine hundred seventy-five trillion, six hundred one billion, five hundred eleven million, five hundred five thousand, one hundred sixty-one".