20448820680460 has 24 divisors (see below), whose sum is σ = 44809589666016. Its totient is φ = 7823896608000.

The previous prime is 20448820680419. The next prime is 20448820680467. The reversal of 20448820680460 is 6408602884402.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20448820680398 and 20448820680407.

It is not an unprimeable number, because it can be changed into a prime (20448820680467) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22226978541 + ... + 22226979460.

It is an arithmetic number, because the mean of its divisors is an integer number (1867066236084).

Almost surely, 2^{20448820680460} is an apocalyptic number.

20448820680460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20448820680460 is an abundant number, since it is smaller than the sum of its proper divisors (24360768985556).

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

20448820680460 is a wasteful number, since it uses less digits than its factorization.

20448820680460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44453958033 (or 44453958031 counting only the distinct ones).

The product of its (nonzero) digits is 4718592, while the sum is 52.

The spelling of 20448820680460 in words is "twenty trillion, four hundred forty-eight billion, eight hundred twenty million, six hundred eighty thousand, four hundred sixty".