2147227729920 has 2040 divisors, whose sum is σ = 9719772378624. Its totient is φ = 449474199552.

The previous prime is 2147227729897. The next prime is 2147227729921. The reversal of 2147227729920 is 299277227412.

2147227729920 is a `hidden beast` number, since 2 + 14 + 72 + 277 + 299 + 2 + 0 = 666.

It is a super-2 number, since 2×2147227729920² (a number of 25 digits) contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2147227729921) by changing a digit.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 16907304897 + ... + 16907305023.

Almost surely, 2^{2147227729920} is an apocalyptic number.

2147227729920 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 2147227729920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4859886189312).

2147227729920 is an abundant number, since it is smaller than the sum of its proper divisors (7572544648704).

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

2147227729920 is an equidigital number, since it uses as much as digits as its factorization.

2147227729920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203 (or 157 counting only the distinct ones).

The product of its (nonzero) digits is 3556224, while the sum is 54.

The spelling of 2147227729920 in words is "two trillion, one hundred forty-seven billion, two hundred twenty-seven million, seven hundred twenty-nine thousand, nine hundred twenty".