206534702054 has 4 divisors (see below), whose sum is σ = 309802053084. Its totient is φ = 103267351026.

The previous prime is 206534702051. The next prime is 206534702071. The reversal of 206534702054 is 450207435602.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 206534701999 and 206534702017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206534702051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51633675512 + ... + 51633675515.

It is an arithmetic number, because the mean of its divisors is an integer number (77450513271).

Almost surely, 2^206534702054 is an apocalyptic number.

206534702054 is a deficient number, since it is larger than the sum of its proper divisors (103267351030).

206534702054 is a wasteful number, since it uses less digits than its factorization.

206534702054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103267351029.

The product of its (nonzero) digits is 201600, while the sum is 38.

The spelling of 206534702054 in words is "two hundred six billion, five hundred thirty-four million, seven hundred two thousand, fifty-four".