543634326206666 has 4 divisors (see below), whose sum is σ = 815451489310002. Its totient is φ = 271817163103332.

The previous prime is 543634326206651. The next prime is 543634326206677. The reversal of 543634326206666 is 666602623436345.

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

It can be written as a sum of positive squares in only one way, i.e., 543041227530025 + 593098676641 = 23303245^2 + 770129^2 .

It is a junction number, because it is equal to n+sod(n) for n = 543634326206599 and 543634326206608.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 135908581551665 + ... + 135908581551668.

Almost surely, 2^{543634326206666} is an apocalyptic number.

543634326206666 is a deficient number, since it is larger than the sum of its proper divisors (271817163103336).

543634326206666 is a wasteful number, since it uses less digits than its factorization.

543634326206666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271817163103335.

The product of its (nonzero) digits is 403107840, while the sum is 62.

The spelling of 543634326206666 in words is "five hundred forty-three trillion, six hundred thirty-four billion, three hundred twenty-six million, two hundred six thousand, six hundred sixty-six".