104520656665 has 8 divisors (see below), whose sum is σ = 125433093960. Its totient is φ = 83610988032.

The previous prime is 104520656659. The next prime is 104520656683. The reversal of 104520656665 is 566656025401.

It can be written as a sum of positive squares in 4 ways, for example, as 32226353289 + 72294303376 = 179517^2 + 268876^2 .

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 104520656665 - 2¹³ = 104520648473 is a prime.

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, 608184 + ... + 760873.

It is an arithmetic number, because the mean of its divisors is an integer number (15679136745).

Almost surely, 2^104520656665 is an apocalyptic number.

It is an amenable number.

104520656665 is a deficient number, since it is larger than the sum of its proper divisors (20912437295).

104520656665 is a wasteful number, since it uses less digits than its factorization.

104520656665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1384331.

The product of its (nonzero) digits is 1296000, while the sum is 46.

The spelling of 104520656665 in words is "one hundred four billion, five hundred twenty million, six hundred fifty-six thousand, six hundred sixty-five".