212068638782 has 64 divisors (see below), whose sum is σ = 434105215488. Its totient is φ = 75018096000.

The previous prime is 212068638781. The next prime is 212068638797. The reversal of 212068638782 is 287836860212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212068638781) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 746144 + ... + 990387.

It is an arithmetic number, because the mean of its divisors is an integer number (6782893992).

Almost surely, 2^212068638782 is an apocalyptic number.

212068638782 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

212068638782 is an abundant number, since it is smaller than the sum of its proper divisors (222036576706).

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

212068638782 is a wasteful number, since it uses less digits than its factorization.

212068638782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1736625.

The product of its (nonzero) digits is 3096576, while the sum is 53.

The spelling of 212068638782 in words is "two hundred twelve billion, sixty-eight million, six hundred thirty-eight thousand, seven hundred eighty-two".