212463723066 has 128 divisors (see below), whose sum is σ = 540553789440. Its totient is φ = 54296179200.

The previous prime is 212463723041. The next prime is 212463723067. The reversal of 212463723066 is 660327364212.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (212463723067) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 909520 + ... + 1118996.

It is an arithmetic number, because the mean of its divisors is an integer number (4223076480).

Almost surely, 2^212463723066 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212463723066, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (270276894720).

212463723066 is an abundant number, since it is smaller than the sum of its proper divisors (328090066374).

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

212463723066 is a wasteful number, since it uses less digits than its factorization.

212463723066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209580.

The product of its (nonzero) digits is 435456, while the sum is 42.

The spelling of 212463723066 in words is "two hundred twelve billion, four hundred sixty-three million, seven hundred twenty-three thousand, sixty-six".