20412523912 has 64 divisors (see below), whose sum is σ = 42449495040. Its totient is φ = 9124104000.

The previous prime is 20412523871. The next prime is 20412523913. The reversal of 20412523912 is 21932521402.

It is a super-2 number, since 2×20412523912² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20412523913) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3812037 + ... + 3817387.

It is an arithmetic number, because the mean of its divisors is an integer number (663273360).

Almost surely, 2^20412523912 is an apocalyptic number.

20412523912 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 20412523912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21224747520).

20412523912 is an abundant number, since it is smaller than the sum of its proper divisors (22036971128).

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

20412523912 is a wasteful number, since it uses less digits than its factorization.

20412523912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6082 (or 6078 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

The spelling of 20412523912 in words is "twenty billion, four hundred twelve million, five hundred twenty-three thousand, nine hundred twelve".