212437978368 has 288 divisors, whose sum is σ = 706871058432. Its totient is φ = 55025049600.

The previous prime is 212437978327. The next prime is 212437978391. The reversal of 212437978368 is 863879734212.

It is a happy number.

212437978368 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22052913 + ... + 22062543.

Almost surely, 2^212437978368 is an apocalyptic number.

212437978368 is a gapful number since it is divisible by the number (28) 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 212437978368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (353435529216).

212437978368 is an abundant number, since it is smaller than the sum of its proper divisors (494433080064).

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

212437978368 is a wasteful number, since it uses less digits than its factorization.

212437978368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10041 (or 10027 counting only the distinct ones).

The product of its digits is 24385536, while the sum is 60.

The spelling of 212437978368 in words is "two hundred twelve billion, four hundred thirty-seven million, nine hundred seventy-eight thousand, three hundred sixty-eight".