20870870804 has 24 divisors (see below), whose sum is σ = 41769672000. Its totient is φ = 8938673856.

The previous prime is 20870870791. The next prime is 20870870819. The reversal of 20870870804 is 40807807802.

It is a happy number.

It is a congruent number.

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 in 7 ways as a sum of consecutive naturals, for example, 206657 + ... + 290600.

It is an arithmetic number, because the mean of its divisors is an integer number (1740403000).

Almost surely, 2^20870870804 is an apocalyptic number.

It is an amenable number.

20870870804 is an abundant number, since it is smaller than the sum of its proper divisors (20898801196).

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

20870870804 is a wasteful number, since it uses less digits than its factorization.

20870870804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498767 (or 498765 counting only the distinct ones).

The product of its (nonzero) digits is 200704, while the sum is 44.

The spelling of 20870870804 in words is "twenty billion, eight hundred seventy million, eight hundred seventy thousand, eight hundred four".