163946409480 has 1024 divisors, whose sum is σ = 709171200000. Its totient is φ = 32802029568.

The previous prime is 163946409449. The next prime is 163946409563. The reversal of 163946409480 is 84904649361.

It is a happy number.

163946409480 is a `hidden beast` number, since 16 + 3 + 9 + 464 + 0 + 94 + 80 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 109369771 + ... + 109371269.

It is an arithmetic number, because the mean of its divisors is an integer number (692550000).

Almost surely, 2^163946409480 is an apocalyptic number.

163946409480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 163946409480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (354585600000).

163946409480 is an abundant number, since it is smaller than the sum of its proper divisors (545224790520).

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

163946409480 is a wasteful number, since it uses less digits than its factorization.

163946409480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1603 (or 1593 counting only the distinct ones).

The product of its (nonzero) digits is 4478976, while the sum is 54.

The spelling of 163946409480 in words is "one hundred sixty-three billion, nine hundred forty-six million, four hundred nine thousand, four hundred eighty".