348257205785 has 16 divisors (see below), whose sum is σ = 432981458640. Its totient is φ = 268586653440.

The previous prime is 348257205733. The next prime is 348257205817. The reversal of 348257205785 is 587502752843.

It can be written as a sum of positive squares in 8 ways, for example, as 383728921 + 347873476864 = 19589^2 + 589808^2 .

It is not a de Polignac number, because 348257205785 - 2⁶ = 348257205721 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 348257205785.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1744346 + ... + 1933715.

It is an arithmetic number, because the mean of its divisors is an integer number (27061341165).

Almost surely, 2^348257205785 is an apocalyptic number.

It is an amenable number.

348257205785 is a deficient number, since it is larger than the sum of its proper divisors (84724252855).

348257205785 is a wasteful number, since it uses less digits than its factorization.

348257205785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3678748.

The product of its (nonzero) digits is 18816000, while the sum is 56.

The spelling of 348257205785 in words is "three hundred forty-eight billion, two hundred fifty-seven million, two hundred five thousand, seven hundred eighty-five".