163128704247940 has 48 divisors (see below), whose sum is σ = 350932644804672. Its totient is φ = 63676853894016.

The previous prime is 163128704247917. The next prime is 163128704248021. The reversal of 163128704247940 is 49742407821361.

It is a super-2 number, since 2×163128704247940² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 568725027 + ... + 569011786.

It is an arithmetic number, because the mean of its divisors is an integer number (7311096766764).

Almost surely, 2^{163128704247940} is an apocalyptic number.

163128704247940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

163128704247940 is an abundant number, since it is smaller than the sum of its proper divisors (187803940556732).

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

163128704247940 is a wasteful number, since it uses less digits than its factorization.

163128704247940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1137736996 (or 1137736994 counting only the distinct ones).

The product of its (nonzero) digits is 16257024, while the sum is 58.

The spelling of 163128704247940 in words is "one hundred sixty-three trillion, one hundred twenty-eight billion, seven hundred four million, two hundred forty-seven thousand, nine hundred forty".