538721670170 has 16 divisors (see below), whose sum is σ = 1026740124648. Its totient is φ = 202812864000.

The previous prime is 538721670169. The next prime is 538721670257. The reversal of 538721670170 is 71076127835.

It can be written as a sum of positive squares in 4 ways, for example, as 522131972569 + 16589697601 = 722587^2 + 128801^2 .

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1584475331 + ... + 1584475670.

Almost surely, 2^538721670170 is an apocalyptic number.

538721670170 is a deficient number, since it is larger than the sum of its proper divisors (488018454478).

538721670170 is a wasteful number, since it uses less digits than its factorization.

538721670170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3168951025.

The product of its (nonzero) digits is 493920, while the sum is 47.

The spelling of 538721670170 in words is "five hundred thirty-eight billion, seven hundred twenty-one million, six hundred seventy thousand, one hundred seventy".