20943605870 has 32 divisors (see below), whose sum is σ = 41163352416. Its totient is φ = 7608870400.

The previous prime is 20943605867. The next prime is 20943605897. The reversal of 20943605870 is 7850634902.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33890 + ... + 207450.

It is an arithmetic number, because the mean of its divisors is an integer number (1286354763).

Almost surely, 2^20943605870 is an apocalyptic number.

20943605870 is a deficient number, since it is larger than the sum of its proper divisors (20219746546).

20943605870 is a wasteful number, since it uses less digits than its factorization.

20943605870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174676.

The product of its (nonzero) digits is 362880, while the sum is 44.

The spelling of 20943605870 in words is "twenty billion, nine hundred forty-three million, six hundred five thousand, eight hundred seventy".