10161605569 has 4 divisors (see below), whose sum is σ = 10251531396. Its totient is φ = 10071679744.

The previous prime is 10161605563. The next prime is 10161605581. The reversal of 10161605569 is 96550616101.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3444163969 + 6717441600 = 58687^2 + 81960^2 .

It is a cyclic number.

It is not a de Polignac number, because 10161605569 - 2²¹ = 10159508417 is a prime.

It is a super-2 number, since 2×10161605569² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10161605563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44962744 + ... + 44962969.

It is an arithmetic number, because the mean of its divisors is an integer number (2562882849).

Almost surely, 2^10161605569 is an apocalyptic number.

It is an amenable number.

10161605569 is a deficient number, since it is larger than the sum of its proper divisors (89925827).

10161605569 is an equidigital number, since it uses as much as digits as its factorization.

10161605569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89925826.

The product of its (nonzero) digits is 48600, while the sum is 40.

The spelling of 10161605569 in words is "ten billion, one hundred sixty-one million, six hundred five thousand, five hundred sixty-nine".