20858052608 has 28 divisors (see below), whose sum is σ = 41713575450. Its totient is φ = 10429022208.

The previous prime is 20858052599. The next prime is 20858052623. The reversal of 20858052608 is 80625085802.

It can be written as a sum of positive squares in only one way, i.e., 18810671104 + 2047381504 = 137152^2 + 45248^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1264883 + ... + 1281266.

Almost surely, 2^20858052608 is an apocalyptic number.

It is an amenable number.

20858052608 is a deficient number, since it is larger than the sum of its proper divisors (20855522842).

20858052608 is an frugal number, since it uses more digits than its factorization.

20858052608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2546175 (or 2546151 counting only the distinct ones).

The product of its (nonzero) digits is 307200, while the sum is 44.

The spelling of 20858052608 in words is "twenty billion, eight hundred fifty-eight million, fifty-two thousand, six hundred eight".