104781438157789 has 8 divisors (see below), whose sum is σ = 104803451174520. Its totient is φ = 104759425963776.

The previous prime is 104781438157699. The next prime is 104781438157843. The reversal of 104781438157789 is 987751834187401.

It can be written as a sum of positive squares in 4 ways, for example, as 77034002500 + 104704404155289 = 277550^2 + 10232517^2 .

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 104781438157789 - 2¹⁷ = 104781438026717 is a prime.

It is a super-3 number, since 3×104781438157789³ (a number of 43 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104781438157289) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 299906569 + ... + 300255745.

It is an arithmetic number, because the mean of its divisors is an integer number (13100431396815).

Almost surely, 2^{104781438157789} is an apocalyptic number.

It is an amenable number.

104781438157789 is a deficient number, since it is larger than the sum of its proper divisors (22013016731).

104781438157789 is an equidigital number, since it uses as much as digits as its factorization.

104781438157789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411359.

The product of its (nonzero) digits is 379330560, while the sum is 73.

The spelling of 104781438157789 in words is "one hundred four trillion, seven hundred eighty-one billion, four hundred thirty-eight million, one hundred fifty-seven thousand, seven hundred eighty-nine".