1618161120317 has 12 divisors (see below), whose sum is σ = 1900625946336. Its totient is φ = 1373529268440.

The previous prime is 1618161120313. The next prime is 1618161120397. The reversal of 1618161120317 is 7130211618161.

It is not a de Polignac number, because 1618161120317 - 2² = 1618161120313 is a prime.

It is a super-2 number, since 2×1618161120317² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1618161120313) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 160304159 + ... + 160314252.

It is an arithmetic number, because the mean of its divisors is an integer number (158385495528).

Almost surely, 2^{1618161120317} is an apocalyptic number.

It is an amenable number.

1618161120317 is a deficient number, since it is larger than the sum of its proper divisors (282464826019).

1618161120317 is a wasteful number, since it uses less digits than its factorization.

1618161120317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320618528 (or 320618521 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 38.

Adding to 1618161120317 its reverse (7130211618161), we get a palindrome (8748372738478).

The spelling of 1618161120317 in words is "one trillion, six hundred eighteen billion, one hundred sixty-one million, one hundred twenty thousand, three hundred seventeen".