20887175652 has 24 divisors (see below), whose sum is σ = 55699135296. Its totient is φ = 5967764448.

The previous prime is 20887175641. The next prime is 20887175711. The reversal of 20887175652 is 25657178802.

It is a junction number, because it is equal to n+sod(n) for n = 20887175595 and 20887175604.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124328343 + ... + 124328510.

It is an arithmetic number, because the mean of its divisors is an integer number (2320797304).

Almost surely, 2^20887175652 is an apocalyptic number.

It is an amenable number.

20887175652 is an abundant number, since it is smaller than the sum of its proper divisors (34811959644).

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

20887175652 is a wasteful number, since it uses less digits than its factorization.

20887175652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248656867 (or 248656865 counting only the distinct ones).

The product of its (nonzero) digits is 1881600, while the sum is 51.

The spelling of 20887175652 in words is "twenty billion, eight hundred eighty-seven million, one hundred seventy-five thousand, six hundred fifty-two".