163520423512 has 64 divisors (see below), whose sum is σ = 314305770240. Its totient is φ = 79733808000.

The previous prime is 163520423503. The next prime is 163520423519. The reversal of 163520423512 is 215324025361.

163520423512 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163520423519) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24844062 + ... + 24850642.

It is an arithmetic number, because the mean of its divisors is an integer number (4911027660).

Almost surely, 2^163520423512 is an apocalyptic number.

It is an amenable number.

163520423512 is a deficient number, since it is larger than the sum of its proper divisors (150785346728).

163520423512 is a wasteful number, since it uses less digits than its factorization.

163520423512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7112 (or 7108 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 34.

Adding to 163520423512 its reverse (215324025361), we get a palindrome (378844448873).

The spelling of 163520423512 in words is "one hundred sixty-three billion, five hundred twenty million, four hundred twenty-three thousand, five hundred twelve".