2032178731920 has 480 divisors, whose sum is σ = 7542429253632. Its totient is φ = 507318806016.

The previous prime is 2032178731889. The next prime is 2032178731927. The reversal of 2032178731920 is 291378712302.

2032178731920 is a `hidden beast` number, since 2 + 0 + 321 + 7 + 8 + 7 + 319 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (2032178731927) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 20966289 + ... + 21062991.

Almost surely, 2^{2032178731920} is an apocalyptic number.

2032178731920 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 2032178731920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3771214626816).

2032178731920 is an abundant number, since it is smaller than the sum of its proper divisors (5510250521712).

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

2032178731920 is a wasteful number, since it uses less digits than its factorization.

2032178731920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96801 (or 96783 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The spelling of 2032178731920 in words is "two trillion, thirty-two billion, one hundred seventy-eight million, seven hundred thirty-one thousand, nine hundred twenty".