163315544440 has 16 divisors (see below), whose sum is σ = 367459975080. Its totient is φ = 65326217760.

The previous prime is 163315544419. The next prime is 163315544453. The reversal of 163315544440 is 44445513361.

163315544440 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×163315544440² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40), and also a Moran number because the ratio is a prime number: 4082888611 = 163315544440 / (1 + 6 + 3 + 3 + 1 + 5 + 5 + 4 + 4 + 4 + 4 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 163315544393 and 163315544402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2041444266 + ... + 2041444345.

Almost surely, 2^163315544440 is an apocalyptic number.

163315544440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

163315544440 is an abundant number, since it is smaller than the sum of its proper divisors (204144430640).

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

163315544440 is a wasteful number, since it uses less digits than its factorization.

163315544440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4082888622 (or 4082888618 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 40.

The spelling of 163315544440 in words is "one hundred sixty-three billion, three hundred fifteen million, five hundred forty-four thousand, four hundred forty".