206385271078 has 16 divisors (see below), whose sum is σ = 359799989760. Its totient is φ = 86951663496.

The previous prime is 206385271069. The next prime is 206385271109. The reversal of 206385271078 is 870172583602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124929726 + ... + 124931377.

It is an arithmetic number, because the mean of its divisors is an integer number (22487499360).

Almost surely, 2^206385271078 is an apocalyptic number.

206385271078 is a deficient number, since it is larger than the sum of its proper divisors (153414718682).

206385271078 is a wasteful number, since it uses less digits than its factorization.

206385271078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249861171.

The product of its (nonzero) digits is 1128960, while the sum is 49.

The spelling of 206385271078 in words is "two hundred six billion, three hundred eighty-five million, two hundred seventy-one thousand, seventy-eight".