20512519412 has 96 divisors (see below), whose sum is σ = 45210057984. Its totient is φ = 7911014400.

The previous prime is 20512519397. The next prime is 20512519421. The reversal of 20512519412 is 21491521502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13849712 + ... + 13851192.

It is an arithmetic number, because the mean of its divisors is an integer number (470938104).

Almost surely, 2^20512519412 is an apocalyptic number.

20512519412 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20512519412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22605028992).

20512519412 is an abundant number, since it is smaller than the sum of its proper divisors (24697538572).

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

20512519412 is a wasteful number, since it uses less digits than its factorization.

20512519412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1929 (or 1927 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 32.

The spelling of 20512519412 in words is "twenty billion, five hundred twelve million, five hundred nineteen thousand, four hundred twelve".