20888185985812 has 12 divisors (see below), whose sum is σ = 36554433230560. Its totient is φ = 10444062205656.

The previous prime is 20888185985767. The next prime is 20888185985831. The reversal of 20888185985812 is 21858958188802.

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, 6135048 + ... + 8911519.

Almost surely, 2^{20888185985812} is an apocalyptic number.

It is an amenable number.

20888185985812 is a deficient number, since it is larger than the sum of its proper divisors (15666247244748).

20888185985812 is a wasteful number, since it uses less digits than its factorization.

20888185985812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15393630 (or 15393628 counting only the distinct ones).

The product of its (nonzero) digits is 235929600, while the sum is 73.

The spelling of 20888185985812 in words is "twenty trillion, eight hundred eighty-eight billion, one hundred eighty-five million, nine hundred eighty-five thousand, eight hundred twelve".