20478248459064 has 128 divisors (see below), whose sum is σ = 62466261696000. Its totient is φ = 6164433504000.

The previous prime is 20478248459017. The next prime is 20478248459087. The reversal of 20478248459064 is 46095484287402.

It is a happy number.

20478248459064 is a `hidden beast` number, since 2 + 0 + 4 + 7 + 8 + 2 + 484 + 5 + 90 + 64 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 20478248458992 and 20478248459010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28180269 + ... + 28897820.

It is an arithmetic number, because the mean of its divisors is an integer number (488017669500).

Almost surely, 2^{20478248459064} is an apocalyptic number.

20478248459064 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20478248459064 is an abundant number, since it is smaller than the sum of its proper divisors (41988013236936).

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

20478248459064 is a wasteful number, since it uses less digits than its factorization.

20478248459064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57078266 (or 57078256 counting only the distinct ones).

The product of its (nonzero) digits is 123863040, while the sum is 63.

The spelling of 20478248459064 in words is "twenty trillion, four hundred seventy-eight billion, two hundred forty-eight million, four hundred fifty-nine thousand, sixty-four".