161160206520 has 32 divisors (see below), whose sum is σ = 483480619920. Its totient is φ = 42976055040.

The previous prime is 161160206437. The next prime is 161160206521. The reversal of 161160206520 is 25602061161.

161160206520 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×161160206520² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161160206521) 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, 671500741 + ... + 671500980.

Almost surely, 2^161160206520 is an apocalyptic number.

161160206520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161160206520 is an abundant number, since it is smaller than the sum of its proper divisors (322320413400).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161160206520 is a wasteful number, since it uses less digits than its factorization.

161160206520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1343001735 (or 1343001731 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

Adding to 161160206520 its reverse (25602061161), we get a palindrome (186762267681).

The spelling of 161160206520 in words is "one hundred sixty-one billion, one hundred sixty million, two hundred six thousand, five hundred twenty".