20504216912 has 40 divisors (see below), whose sum is σ = 41026159872. Its totient is φ = 9917107200.

The previous prime is 20504216897. The next prime is 20504216917. The reversal of 20504216912 is 21961240502.

It is a super-2 number, since 2×20504216912² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20504216917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1347008 + ... + 1362144.

Almost surely, 2^20504216912 is an apocalyptic number.

It is an amenable number.

20504216912 is an abundant number, since it is smaller than the sum of its proper divisors (20521942960).

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

20504216912 is a wasteful number, since it uses less digits than its factorization.

20504216912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17907 (or 17901 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 32.

The spelling of 20504216912 in words is "twenty billion, five hundred four million, two hundred sixteen thousand, nine hundred twelve".