20693818452 has 12 divisors (see below), whose sum is σ = 48285576416. Its totient is φ = 6897939480.

The previous prime is 20693818427. The next prime is 20693818471. The reversal of 20693818452 is 25481839602.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 862242424 + ... + 862242447.

Almost surely, 2^20693818452 is an apocalyptic number.

It is an amenable number.

20693818452 is an abundant number, since it is smaller than the sum of its proper divisors (27591757964).

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

20693818452 is a wasteful number, since it uses less digits than its factorization.

20693818452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1724484878 (or 1724484876 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 48.

The spelling of 20693818452 in words is "twenty billion, six hundred ninety-three million, eight hundred eighteen thousand, four hundred fifty-two".