655116161 has 4 divisors (see below), whose sum is σ = 748704192. Its totient is φ = 561528132.

The previous prime is 655116113. The next prime is 655116169. The reversal of 655116161 is 161611556.

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 655116161 - 2²⁶ = 588007297 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (655116169) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46794005 + ... + 46794018.

It is an arithmetic number, because the mean of its divisors is an integer number (187176048).

Almost surely, 2^655116161 is an apocalyptic number.

It is an amenable number.

655116161 is a deficient number, since it is larger than the sum of its proper divisors (93588031).

655116161 is an equidigital number, since it uses as much as digits as its factorization.

655116161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93588030.

The product of its digits is 5400, while the sum is 32.

The square root of 655116161 is about 25595.2370764562. The cubic root of 655116161 is about 868.5058959395.

The spelling of 655116161 in words is "six hundred fifty-five million, one hundred sixteen thousand, one hundred sixty-one".