212432891472 has 60 divisors (see below), whose sum is σ = 594612906004. Its totient is φ = 70799546880.

The previous prime is 212432891453. The next prime is 212432891477. The reversal of 212432891472 is 274198234212.

It can be written as a sum of positive squares in 2 ways, for example, as 161440025616 + 50992865856 = 401796^2 + 225816^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212432891477) 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, 801972 + ... + 1033452.

Almost surely, 2^212432891472 is an apocalyptic number.

It is an amenable number.

212432891472 is an abundant number, since it is smaller than the sum of its proper divisors (382180014532).

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

212432891472 is a wasteful number, since it uses less digits than its factorization.

212432891472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237868 (or 237859 counting only the distinct ones).

The product of its digits is 387072, while the sum is 45.

The spelling of 212432891472 in words is "two hundred twelve billion, four hundred thirty-two million, eight hundred ninety-one thousand, four hundred seventy-two".