20809413549488 has 10 divisors (see below), whose sum is σ = 40318238752164. Its totient is φ = 10404706774736.

The previous prime is 20809413549469. The next prime is 20809413549497. The reversal of 20809413549488 is 88494531490802.

20809413549488 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×20809413549488² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 650294173406 + ... + 650294173437.

Almost surely, 2^{20809413549488} is an apocalyptic number.

It is an amenable number.

20809413549488 is a deficient number, since it is larger than the sum of its proper divisors (19508825202676).

20809413549488 is a wasteful number, since it uses less digits than its factorization.

20809413549488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1300588346851 (or 1300588346845 counting only the distinct ones).

The product of its (nonzero) digits is 79626240, while the sum is 65.

The spelling of 20809413549488 in words is "twenty trillion, eight hundred nine billion, four hundred thirteen million, five hundred forty-nine thousand, four hundred eighty-eight".