163556470040 has 64 divisors (see below), whose sum is σ = 378748742400. Its totient is φ = 63538790272.

The previous prime is 163556470031. The next prime is 163556470043. The reversal of 163556470040 is 40074655361.

It is a self number, because there is not a number n which added to its sum of digits gives 163556470040.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163556470043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 221612 + ... + 613371.

It is an arithmetic number, because the mean of its divisors is an integer number (5917949100).

Almost surely, 2^163556470040 is an apocalyptic number.

163556470040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

163556470040 is an abundant number, since it is smaller than the sum of its proper divisors (215192272360).

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

163556470040 is a wasteful number, since it uses less digits than its factorization.

163556470040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 835136 (or 835132 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 41.

The spelling of 163556470040 in words is "one hundred sixty-three billion, five hundred fifty-six million, four hundred seventy thousand, forty".