20579361905212 has 48 divisors (see below), whose sum is σ = 41295282561792. Its totient is φ = 8882238020480.

The previous prime is 20579361905183. The next prime is 20579361905239. The reversal of 20579361905212 is 21250916397502.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 20579361905212.

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, 74077918 + ... + 74355205.

It is an arithmetic number, because the mean of its divisors is an integer number (860318386704).

Almost surely, 2^{20579361905212} is an apocalyptic number.

20579361905212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20579361905212 is an abundant number, since it is smaller than the sum of its proper divisors (20715920656580).

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

20579361905212 is a wasteful number, since it uses less digits than its factorization.

20579361905212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148433298 (or 148433296 counting only the distinct ones).

The product of its (nonzero) digits is 2041200, while the sum is 52.

The spelling of 20579361905212 in words is "twenty trillion, five hundred seventy-nine billion, three hundred sixty-one million, nine hundred five thousand, two hundred twelve".