212791961232 has 60 divisors (see below), whose sum is σ = 599518799100. Its totient is φ = 70454601984.

The previous prime is 212791961231. The next prime is 212791961299. The reversal of 212791961232 is 232169197212.

212791961232 is a `hidden beast` number, since 2 + 1 + 27 + 9 + 1 + 9 + 612 + 3 + 2 = 666.

212791961232 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 14193386496 + 198598574736 = 119136^2 + 445644^2 .

It is not an unprimeable number, because it can be changed into a prime (212791961231) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 4937343 + ... + 4980254.

It is an arithmetic number, because the mean of its divisors is an integer number (9991979985).

Almost surely, 2^212791961232 is an apocalyptic number.

It is an amenable number.

212791961232 is an abundant number, since it is smaller than the sum of its proper divisors (386726837868).

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

212791961232 is a wasteful number, since it uses less digits than its factorization.

212791961232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9917760 (or 9917751 counting only the distinct ones).

The product of its digits is 163296, while the sum is 45.

The spelling of 212791961232 in words is "two hundred twelve billion, seven hundred ninety-one million, nine hundred sixty-one thousand, two hundred thirty-two".