163512123640 has 32 divisors (see below), whose sum is σ = 367917784560. Its totient is φ = 65402092800.

The previous prime is 163512123631. The next prime is 163512123659. The reversal of 163512123640 is 46321215361.

It is a junction number, because it is equal to n+sod(n) for n = 163512123596 and 163512123605.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1064500 + ... + 1208380.

Almost surely, 2^163512123640 is an apocalyptic number.

163512123640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

163512123640 is an abundant number, since it is smaller than the sum of its proper divisors (204405660920).

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

163512123640 is a wasteful number, since it uses less digits than its factorization.

163512123640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172303 (or 172299 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 34.

The spelling of 163512123640 in words is "one hundred sixty-three billion, five hundred twelve million, one hundred twenty-three thousand, six hundred forty".