20512630216 has 32 divisors (see below), whose sum is σ = 42382992960. Its totient is φ = 9247194432.

The previous prime is 20512630211. The next prime is 20512630217. The reversal of 20512630216 is 61203621502.

It is not an unprimeable number, because it can be changed into a prime (20512630211) by changing a digit.

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, 2288980 + ... + 2297923.

It is an arithmetic number, because the mean of its divisors is an integer number (1324468530).

Almost surely, 2^20512630216 is an apocalyptic number.

20512630216 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

20512630216 is an abundant number, since it is smaller than the sum of its proper divisors (21870362744).

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

20512630216 is a wasteful number, since it uses less digits than its factorization.

20512630216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4586965 (or 4586961 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The spelling of 20512630216 in words is "twenty billion, five hundred twelve million, six hundred thirty thousand, two hundred sixteen".