693217973138 has 8 divisors (see below), whose sum is σ = 1040818218300. Its totient is φ = 346278567040.

The previous prime is 693217973117. The next prime is 693217973167. The reversal of 693217973138 is 831379712396.

It can be written as a sum of positive squares in 2 ways, for example, as 666373444489 + 26844528649 = 816317^2 + 163843^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 165207143 + ... + 165211338.

Almost surely, 2^693217973138 is an apocalyptic number.

693217973138 is a deficient number, since it is larger than the sum of its proper divisors (347600245162).

693217973138 is a wasteful number, since it uses less digits than its factorization.

693217973138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330419532.

The product of its digits is 10287648, while the sum is 59.

The spelling of 693217973138 in words is "six hundred ninety-three billion, two hundred seventeen million, nine hundred seventy-three thousand, one hundred thirty-eight".