20875048413561 has 72 divisors (see below), whose sum is σ = 31998302793600. Its totient is φ = 13614441366240.

The previous prime is 20875048413529. The next prime is 20875048413617. The reversal of 20875048413561 is 16531484057802.

It is a happy number.

20875048413561 is a `hidden beast` number, since 2 + 0 + 8 + 7 + 504 + 8 + 41 + 35 + 61 = 666.

It is not a de Polignac number, because 20875048413561 - 2⁵ = 20875048413529 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20875048413498 and 20875048413507.

It is not an unprimeable number, because it can be changed into a prime (20875048413511) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 56312026 + ... + 56681516.

Almost surely, 2^{20875048413561} is an apocalyptic number.

It is an amenable number.

20875048413561 is a deficient number, since it is larger than the sum of its proper divisors (11123254380039).

20875048413561 is an frugal number, since it uses more digits than its factorization.

20875048413561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 369703 (or 369682 counting only the distinct ones).

The product of its (nonzero) digits is 6451200, while the sum is 54.

The spelling of 20875048413561 in words is "twenty trillion, eight hundred seventy-five billion, forty-eight million, four hundred thirteen thousand, five hundred sixty-one".