163912872864 has 144 divisors (see below), whose sum is σ = 466621241184. Its totient is φ = 50358297600.

The previous prime is 163912872859. The next prime is 163912872869. The reversal of 163912872864 is 468278219361.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (163912872859) and next prime (163912872869).

It is not an unprimeable number, because it can be changed into a prime (163912872869) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11203474 + ... + 11218094.

It is an arithmetic number, because the mean of its divisors is an integer number (3240425286).

Almost surely, 2^163912872864 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 163912872864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (233310620592).

163912872864 is an abundant number, since it is smaller than the sum of its proper divisors (302708368320).

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

163912872864 is a wasteful number, since it uses less digits than its factorization.

163912872864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15351 (or 15330 counting only the distinct ones).

The product of its digits is 6967296, while the sum is 57.

The spelling of 163912872864 in words is "one hundred sixty-three billion, nine hundred twelve million, eight hundred seventy-two thousand, eight hundred sixty-four".