43261204212 has 36 divisors (see below), whose sum is σ = 110482087716. Its totient is φ = 14271736320.

The previous prime is 43261204211. The next prime is 43261204241. The reversal of 43261204212 is 21240216234.

43261204212 is a `hidden beast` number, since 4 + 3 + 2 + 612 + 0 + 42 + 1 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 31853682576 + 11407521636 = 178476^2 + 106806^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43261204211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6190839 + ... + 6197822.

It is an arithmetic number, because the mean of its divisors is an integer number (3068946881).

Almost surely, 2^43261204212 is an apocalyptic number.

It is an amenable number.

43261204212 is an abundant number, since it is smaller than the sum of its proper divisors (67220883504).

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

43261204212 is a wasteful number, since it uses less digits than its factorization.

43261204212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12388768 (or 12388763 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The spelling of 43261204212 in words is "forty-three billion, two hundred sixty-one million, two hundred four thousand, two hundred twelve".