206342773551 has 12 divisors (see below), whose sum is σ = 311009398128. Its totient is φ = 131580898944.

The previous prime is 206342773517. The next prime is 206342773589. The reversal of 206342773551 is 155377243602.

206342773551 is a `hidden beast` number, since 2 + 0 + 6 + 3 + 4 + 27 + 73 + 551 = 666.

It is not a de Polignac number, because 206342773551 - 2⁷ = 206342773423 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 206342773497 and 206342773506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206342773151) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 498412290 + ... + 498412703.

It is an arithmetic number, because the mean of its divisors is an integer number (25917449844).

Almost surely, 2^206342773551 is an apocalyptic number.

206342773551 is a deficient number, since it is larger than the sum of its proper divisors (104666624577).

206342773551 is a wasteful number, since it uses less digits than its factorization.

206342773551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 996825022 (or 996825019 counting only the distinct ones).

The product of its (nonzero) digits is 1058400, while the sum is 45.

The spelling of 206342773551 in words is "two hundred six billion, three hundred forty-two million, seven hundred seventy-three thousand, five hundred fifty-one".