20673212804 has 6 divisors (see below), whose sum is σ = 36178122414. Its totient is φ = 10336606400.

The previous prime is 20673212801. The next prime is 20673212837. The reversal of 20673212804 is 40821237602.

It can be written as a sum of positive squares in only one way, i.e., 19797052804 + 876160000 = 140702^2 + 29600^2 .

It is not an unprimeable number, because it can be changed into a prime (20673212801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2584151597 + ... + 2584151604.

It is an arithmetic number, because the mean of its divisors is an integer number (6029687069).

Almost surely, 2^20673212804 is an apocalyptic number.

It is an amenable number.

20673212804 is a deficient number, since it is larger than the sum of its proper divisors (15504909610).

20673212804 is a wasteful number, since it uses less digits than its factorization.

20673212804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5168303205 (or 5168303203 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 35.

The spelling of 20673212804 in words is "twenty billion, six hundred seventy-three million, two hundred twelve thousand, eight hundred four".