163721354112 has 256 divisors, whose sum is σ = 505429747200. Its totient is φ = 52075229184.

The previous prime is 163721354101. The next prime is 163721354123. The reversal of 163721354112 is 211453127361.

163721354112 is a `hidden beast` number, since 1 + 637 + 2 + 1 + 3 + 5 + 4 + 1 + 12 = 666.

It is an interprime number because it is at equal distance from previous prime (163721354101) and next prime (163721354123).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36323763 + ... + 36328269.

It is an arithmetic number, because the mean of its divisors is an integer number (1974334950).

Almost surely, 2^163721354112 is an apocalyptic number.

163721354112 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 163721354112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (252714873600).

163721354112 is an abundant number, since it is smaller than the sum of its proper divisors (341708393088).

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

163721354112 is a wasteful number, since it uses less digits than its factorization.

163721354112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5010 (or 4992 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The spelling of 163721354112 in words is "one hundred sixty-three billion, seven hundred twenty-one million, three hundred fifty-four thousand, one hundred twelve".