73338686681 has 8 divisors (see below), whose sum is σ = 83626014024. Its totient is φ = 63715057920.

The previous prime is 73338686677. The next prime is 73338686723. The reversal of 73338686681 is 18668683337.

It can be written as a sum of positive squares in 4 ways, for example, as 6046681 + 73332640000 = 2459^2 + 270800^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 73338686681 - 2² = 73338686677 is a prime.

It is a super-2 number, since 2×73338686681² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 73338686681.

It is not an unprimeable number, because it can be changed into a prime (73338686651) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 165924410 + ... + 165924851.

It is an arithmetic number, because the mean of its divisors is an integer number (10453251753).

Almost surely, 2^73338686681 is an apocalyptic number.

It is an amenable number.

73338686681 is a deficient number, since it is larger than the sum of its proper divisors (10287327343).

73338686681 is a wasteful number, since it uses less digits than its factorization.

73338686681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331849291.

The product of its digits is 20901888, while the sum is 59.

The spelling of 73338686681 in words is "seventy-three billion, three hundred thirty-eight million, six hundred eighty-six thousand, six hundred eighty-one".