206706373240 has 32 divisors (see below), whose sum is σ = 466249199760. Its totient is φ = 82476352000.

The previous prime is 206706373163. The next prime is 206706373241. The reversal of 206706373240 is 42373607602.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 206706373193 and 206706373202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206706373241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6427426 + ... + 6459505.

Almost surely, 2^206706373240 is an apocalyptic number.

206706373240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

206706373240 is an abundant number, since it is smaller than the sum of its proper divisors (259542826520).

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

206706373240 is a wasteful number, since it uses less digits than its factorization.

206706373240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12887343 (or 12887339 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 40.

The spelling of 206706373240 in words is "two hundred six billion, seven hundred six million, three hundred seventy-three thousand, two hundred forty".