163912857264 has 240 divisors, whose sum is σ = 516034471680. Its totient is φ = 48191362560.

The previous prime is 163912857221. The next prime is 163912857299. The reversal of 163912857264 is 462758219361.

It is a happy number.

163912857264 is a `hidden beast` number, since 1 + 6 + 3 + 9 + 1 + 2 + 8 + 572 + 64 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 163912857264.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 67984219 + ... + 67986629.

It is an arithmetic number, because the mean of its divisors is an integer number (2150143632).

Almost surely, 2^163912857264 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 163912857264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (258017235840).

163912857264 is an abundant number, since it is smaller than the sum of its proper divisors (352121614416).

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

163912857264 is a wasteful number, since it uses less digits than its factorization.

163912857264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4040 (or 4031 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 54.

The spelling of 163912857264 in words is "one hundred sixty-three billion, nine hundred twelve million, eight hundred fifty-seven thousand, two hundred sixty-four".