163874921472 has 176 divisors, whose sum is σ = 489622421280. Its totient is φ = 54140534784.

The previous prime is 163874921467. The next prime is 163874921477. The reversal of 163874921472 is 274129478361.

163874921472 is a `hidden beast` number, since 1 + 6 + 3 + 8 + 7 + 492 + 147 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (163874921467) and next prime (163874921477).

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

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163874921477) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3097998 + ... + 3150450.

Almost surely, 2^163874921472 is an apocalyptic number.

163874921472 is a gapful number since it is divisible by the number (12) 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 163874921472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (244811210640).

163874921472 is an abundant number, since it is smaller than the sum of its proper divisors (325747499808).

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

163874921472 is a wasteful number, since it uses less digits than its factorization.

163874921472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52595 (or 52571 counting only the distinct ones).

The product of its digits is 4064256, while the sum is 54.

The spelling of 163874921472 in words is "one hundred sixty-three billion, eight hundred seventy-four million, nine hundred twenty-one thousand, four hundred seventy-two".