70838208556666 has 16 divisors (see below), whose sum is σ = 106379142556680. Its totient is φ = 35378507983680.

The previous prime is 70838208556663. The next prime is 70838208556673. The reversal of 70838208556666 is 66665580283807.

It can be written as a sum of positive squares in 4 ways, for example, as 70732658293441 + 105550263225 = 8410271^2 + 324885^2 .

It is a junction number, because it is equal to n+sod(n) for n = 70838208556595 and 70838208556604.

It is not an unprimeable number, because it can be changed into a prime (70838208556663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7016740 + ... + 13817056.

Almost surely, 2^{70838208556666} is an apocalyptic number.

70838208556666 is a deficient number, since it is larger than the sum of its proper divisors (35540934000014).

70838208556666 is a wasteful number, since it uses less digits than its factorization.

70838208556666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6806289.

The product of its (nonzero) digits is 696729600, while the sum is 70.

The spelling of 70838208556666 in words is "seventy trillion, eight hundred thirty-eight billion, two hundred eight million, five hundred fifty-six thousand, six hundred sixty-six".