20484687571776 has 56 divisors (see below), whose sum is σ = 60221188005440. Its totient is φ = 6828229190016.

The previous prime is 20484687571769. The next prime is 20484687571819. The reversal of 20484687571776 is 67717578648402.

20484687571776 is a `hidden beast` number, since 2 + 0 + 4 + 8 + 46 + 8 + 7 + 571 + 7 + 7 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5927280556 + ... + 5927284011.

It is an arithmetic number, because the mean of its divisors is an integer number (1075378357240).

Almost surely, 2^{20484687571776} is an apocalyptic number.

It is an amenable number.

20484687571776 is an abundant number, since it is smaller than the sum of its proper divisors (39736500433664).

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

20484687571776 is a wasteful number, since it uses less digits than its factorization.

20484687571776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11854564588 (or 11854564572 counting only the distinct ones).

The product of its (nonzero) digits is 885104640, while the sum is 72.

The spelling of 20484687571776 in words is "twenty trillion, four hundred eighty-four billion, six hundred eighty-seven million, five hundred seventy-one thousand, seven hundred seventy-six".