161606010565057 has 8 divisors (see below), whose sum is σ = 162023931236736. Its totient is φ = 161188553994672.

The previous prime is 161606010565019. The next prime is 161606010565079. The reversal of 161606010565057 is 750565010606161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 161606010565057 - 2¹¹ = 161606010563009 is a prime.

It is a super-2 number, since 2×161606010565057² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 161606010565057.

It is not an unprimeable number, because it can be changed into a prime (161606010563057) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115327993 + ... + 116720854.

It is an arithmetic number, because the mean of its divisors is an integer number (20252991404592).

Almost surely, 2^{161606010565057} is an apocalyptic number.

It is an amenable number.

161606010565057 is a deficient number, since it is larger than the sum of its proper divisors (417920671679).

161606010565057 is a wasteful number, since it uses less digits than its factorization.

161606010565057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232050647.

The product of its (nonzero) digits is 1134000, while the sum is 49.

The spelling of 161606010565057 in words is "one hundred sixty-one trillion, six hundred six billion, ten million, five hundred sixty-five thousand, fifty-seven".