206622124440 has 128 divisors (see below), whose sum is σ = 624706283520. Its totient is φ = 54669888000.

The previous prime is 206622124439. The next prime is 206622124463. The reversal of 206622124440 is 44421226602.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 16501062 + ... + 16513578.

It is an arithmetic number, because the mean of its divisors is an integer number (4880517840).

Almost surely, 2^206622124440 is an apocalyptic number.

206622124440 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 206622124440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (312353141760).

206622124440 is an abundant number, since it is smaller than the sum of its proper divisors (418084159080).

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

206622124440 is a wasteful number, since it uses less digits than its factorization.

206622124440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13593 (or 13589 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 33.

The spelling of 206622124440 in words is "two hundred six billion, six hundred twenty-two million, one hundred twenty-four thousand, four hundred forty".