20516935008 has 48 divisors (see below), whose sum is σ = 53985597120. Its totient is φ = 6822642816.

The previous prime is 20516934979. The next prime is 20516935013. The reversal of 20516935008 is 80053961502.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 214810 + ... + 295257.

It is an arithmetic number, because the mean of its divisors is an integer number (1124699940).

Almost surely, 2^20516935008 is an apocalyptic number.

It is an amenable number.

20516935008 is an abundant number, since it is smaller than the sum of its proper divisors (33468662112).

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

20516935008 is a wasteful number, since it uses less digits than its factorization.

20516935008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510499 (or 510491 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 39.

The spelling of 20516935008 in words is "twenty billion, five hundred sixteen million, nine hundred thirty-five thousand, eight".