212316475440 has 160 divisors (see below), whose sum is σ = 676519557120. Its totient is φ = 55042716672.

The previous prime is 212316475433. The next prime is 212316475451. The reversal of 212316475440 is 44574613212.

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, 11703657 + ... + 11721783.

It is an arithmetic number, because the mean of its divisors is an integer number (4228247232).

Almost surely, 2^212316475440 is an apocalyptic number.

212316475440 is a gapful number since it is divisible by the number (20) 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 212316475440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (338259778560).

212316475440 is an abundant number, since it is smaller than the sum of its proper divisors (464203081680).

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

212316475440 is a wasteful number, since it uses less digits than its factorization.

212316475440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19499 (or 19493 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 39.

The spelling of 212316475440 in words is "two hundred twelve billion, three hundred sixteen million, four hundred seventy-five thousand, four hundred forty".