160897655521 has 4 divisors (see below), whose sum is σ = 169365953200. Its totient is φ = 152429357844.

The previous prime is 160897655519. The next prime is 160897655533. The reversal of 160897655521 is 125556798061.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 160897655521 - 2¹ = 160897655519 is a prime.

It is a super-3 number, since 3×160897655521³ (a number of 35 digits) contains 333 as substring.

It is the 401121-st Hogben number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (160897655021) by changing a digit.

It is a nontrivial repunit in base 401120.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4234148811 + ... + 4234148848.

It is an arithmetic number, because the mean of its divisors is an integer number (42341488300).

Almost surely, 2^160897655521 is an apocalyptic number.

It is an amenable number.

160897655521 is a deficient number, since it is larger than the sum of its proper divisors (8468297679).

160897655521 is an equidigital number, since it uses as much as digits as its factorization.

160897655521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8468297678.

The product of its (nonzero) digits is 4536000, while the sum is 55.

The spelling of 160897655521 in words is "one hundred sixty billion, eight hundred ninety-seven million, six hundred fifty-five thousand, five hundred twenty-one".