206782340775 has 12 divisors (see below), whose sum is σ = 341880136872. Its totient is φ = 110283915040.

The previous prime is 206782340753. The next prime is 206782340803. The reversal of 206782340775 is 577043287602.

It is not a de Polignac number, because 206782340775 - 2⁶ = 206782340711 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1378548864 + ... + 1378549013.

It is an arithmetic number, because the mean of its divisors is an integer number (28490011406).

Almost surely, 2^206782340775 is an apocalyptic number.

206782340775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

206782340775 is a deficient number, since it is larger than the sum of its proper divisors (135097796097).

206782340775 is a wasteful number, since it uses less digits than its factorization.

206782340775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2757097890 (or 2757097885 counting only the distinct ones).

The product of its (nonzero) digits is 3951360, while the sum is 51.

The spelling of 206782340775 in words is "two hundred six billion, seven hundred eighty-two million, three hundred forty thousand, seven hundred seventy-five".