20669848471560 has 64 divisors (see below), whose sum is σ = 62882919319680. Its totient is φ = 5434326356480.

The previous prime is 20669848471507. The next prime is 20669848471583. The reversal of 20669848471560 is 6517484896602.

It is a super-3 number, since 3×20669848471560³ (a number of 41 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20669848471491 and 20669848471500.

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 15 ways as a sum of consecutive naturals, for example, 1213010757 + ... + 1213027796.

It is an arithmetic number, because the mean of its divisors is an integer number (982545614370).

Almost surely, 2^{20669848471560} is an apocalyptic number.

20669848471560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20669848471560 is an abundant number, since it is smaller than the sum of its proper divisors (42213070848120).

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

20669848471560 is a wasteful number, since it uses less digits than its factorization.

20669848471560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2426038638 (or 2426038634 counting only the distinct ones).

The product of its (nonzero) digits is 139345920, while the sum is 66.

The spelling of 20669848471560 in words is "twenty trillion, six hundred sixty-nine billion, eight hundred forty-eight million, four hundred seventy-one thousand, five hundred sixty".