163628859140 has 24 divisors (see below), whose sum is σ = 344372528472. Its totient is φ = 65308320000.

The previous prime is 163628859109. The next prime is 163628859157. The reversal of 163628859140 is 41958826361.

It can be written as a sum of positive squares in 4 ways, for example, as 58007759104 + 105621100036 = 240848^2 + 324994^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8942111 + ... + 8960390.

It is an arithmetic number, because the mean of its divisors is an integer number (14348855353).

Almost surely, 2^163628859140 is an apocalyptic number.

163628859140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

163628859140 is an abundant number, since it is smaller than the sum of its proper divisors (180743669332).

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

163628859140 is a wasteful number, since it uses less digits than its factorization.

163628859140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17902967 (or 17902965 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 53.

The spelling of 163628859140 in words is "one hundred sixty-three billion, six hundred twenty-eight million, eight hundred fifty-nine thousand, one hundred forty".