651570716161 has 2 divisors, whose sum is σ = 651570716162. Its totient is φ = 651570716160.

The previous prime is 651570716131. The next prime is 651570716171. The reversal of 651570716161 is 161617075156.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 597460977936 + 54109738225 = 772956^2 + 232615^2 .

It is a cyclic number.

It is not a de Polignac number, because 651570716161 - 2¹³ = 651570707969 is a prime.

It is not a weakly prime, because it can be changed into another prime (651570716131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 325785358080 + 325785358081.

It is an arithmetic number, because the mean of its divisors is an integer number (325785358081).

Almost surely, 2^651570716161 is an apocalyptic number.

It is an amenable number.

651570716161 is a deficient number, since it is larger than the sum of its proper divisors (1).

651570716161 is an equidigital number, since it uses as much as digits as its factorization.

651570716161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 264600, while the sum is 46.

The spelling of 651570716161 in words is "six hundred fifty-one billion, five hundred seventy million, seven hundred sixteen thousand, one hundred sixty-one".