161570560601 has 2 divisors, whose sum is σ = 161570560602. Its totient is φ = 161570560600.

The previous prime is 161570560549. The next prime is 161570560631. The reversal of 161570560601 is 106065075161.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 133312614400 + 28257946201 = 365120^2 + 168101^2 .

It is a cyclic number.

It is not a de Polignac number, because 161570560601 - 2⁶ = 161570560537 is a prime.

It is a super-2 number, since 2×161570560601² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (161570560631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80785280300 + 80785280301.

It is an arithmetic number, because the mean of its divisors is an integer number (80785280301).

Almost surely, 2^161570560601 is an apocalyptic number.

It is an amenable number.

161570560601 is a deficient number, since it is larger than the sum of its proper divisors (1).

161570560601 is an equidigital number, since it uses as much as digits as its factorization.

161570560601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 37800, while the sum is 38.

The spelling of 161570560601 in words is "one hundred sixty-one billion, five hundred seventy million, five hundred sixty thousand, six hundred one".