20532515212 has 24 divisors (see below), whose sum is σ = 39204888912. Its totient is φ = 9331425600.

The previous prime is 20532515203. The next prime is 20532515251. The reversal of 20532515212 is 21251523502.

It is a super-2 number, since 2×20532515212² (a number of 21 digits) contains 22 as substring.

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, 257662 + ... + 327802.

It is an arithmetic number, because the mean of its divisors is an integer number (1633537038).

Almost surely, 2^20532515212 is an apocalyptic number.

20532515212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20532515212 is a deficient number, since it is larger than the sum of its proper divisors (18672373700).

20532515212 is a wasteful number, since it uses less digits than its factorization.

20532515212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76809 (or 76807 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 28.

The spelling of 20532515212 in words is "twenty billion, five hundred thirty-two million, five hundred fifteen thousand, two hundred twelve".