206413006440 has 64 divisors (see below), whose sum is σ = 619382520000. Its totient is φ = 55030712832.

The previous prime is 206413006427. The next prime is 206413006441. The reversal of 206413006440 is 44600314602.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 206413006398 and 206413006407.

It is not an unprimeable number, because it can be changed into a prime (206413006441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 326436 + ... + 720684.

It is an arithmetic number, because the mean of its divisors is an integer number (9677851875).

Almost surely, 2^206413006440 is an apocalyptic number.

206413006440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

206413006440 is an abundant number, since it is smaller than the sum of its proper divisors (412969513560).

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

206413006440 is a wasteful number, since it uses less digits than its factorization.

206413006440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398626 (or 398622 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 30.

The spelling of 206413006440 in words is "two hundred six billion, four hundred thirteen million, six thousand, four hundred forty".