20512970224 has 20 divisors (see below), whose sum is σ = 39773124000. Its totient is φ = 10248938240.

The previous prime is 20512970201. The next prime is 20512970239. The reversal of 20512970224 is 42207921502.

It is a happy number.

It is a super-2 number, since 2×20512970224² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20512970224.

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 3 ways as a sum of consecutive naturals, for example, 449224 + ... + 492775.

It is an arithmetic number, because the mean of its divisors is an integer number (1988656200).

Almost surely, 2^20512970224 is an apocalyptic number.

It is an amenable number.

20512970224 is a deficient number, since it is larger than the sum of its proper divisors (19260153776).

20512970224 is a wasteful number, since it uses less digits than its factorization.

20512970224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 943368 (or 943362 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 34.

The spelling of 20512970224 in words is "twenty billion, five hundred twelve million, nine hundred seventy thousand, two hundred twenty-four".