20187313784460 has 72 divisors (see below), whose sum is σ = 61239691408896. Its totient is φ = 5382858216960.

The previous prime is 20187313784411. The next prime is 20187313784467. The reversal of 20187313784460 is 6448731378102.

20187313784460 is a `hidden beast` number, since 2 + 0 + 1 + 8 + 73 + 1 + 37 + 84 + 460 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 20187313784397 and 20187313784406.

It is not an unprimeable number, because it can be changed into a prime (20187313784467) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2144749 + ... + 6706308.

It is an arithmetic number, because the mean of its divisors is an integer number (850551269568).

Almost surely, 2^{20187313784460} is an apocalyptic number.

20187313784460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20187313784460 is an abundant number, since it is smaller than the sum of its proper divisors (41052377624436).

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

20187313784460 is a wasteful number, since it uses less digits than its factorization.

20187313784460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8863743 (or 8863738 counting only the distinct ones).

The product of its (nonzero) digits is 5419008, while the sum is 54.

The spelling of 20187313784460 in words is "twenty trillion, one hundred eighty-seven billion, three hundred thirteen million, seven hundred eighty-four thousand, four hundred sixty".