20163133980 has 432 divisors, whose sum is σ = 70727660640. Its totient is φ = 4786905600.

The previous prime is 20163133973. The next prime is 20163134009. The reversal of 20163133980 is 8933136102.

20163133980 is a `hidden beast` number, since 201 + 63 + 1 + 3 + 398 + 0 = 666.

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 (13) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 88048506 + ... + 88048734.

Almost surely, 2^20163133980 is an apocalyptic number.

20163133980 is a gapful number since it is divisible by the number (20) 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 20163133980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35363830320).

20163133980 is an abundant number, since it is smaller than the sum of its proper divisors (50564526660).

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

20163133980 is a wasteful number, since it uses less digits than its factorization.

20163133980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334 (or 311 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The spelling of 20163133980 in words is "twenty billion, one hundred sixty-three million, one hundred thirty-three thousand, nine hundred eighty".