133861718077585 has 8 divisors (see below), whose sum is σ = 160636763007720. Its totient is φ = 107087573585664.

The previous prime is 133861718077553. The next prime is 133861718077657. The reversal of 133861718077585 is 585770817168331.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 26101789038081 + 107759929039504 = 5108991^2 + 10380748^2 .

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 133861718077585 - 2⁵ = 133861718077553 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 224782450 + ... + 225377179.

It is an arithmetic number, because the mean of its divisors is an integer number (20079595375965).

Almost surely, 2^{133861718077585} is an apocalyptic number.

It is an amenable number.

133861718077585 is a deficient number, since it is larger than the sum of its proper divisors (26775044930135).

133861718077585 is an equidigital number, since it uses as much as digits as its factorization.

133861718077585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450219107.

The product of its (nonzero) digits is 237081600, while the sum is 70.

The spelling of 133861718077585 in words is "one hundred thirty-three trillion, eight hundred sixty-one billion, seven hundred eighteen million, seventy-seven thousand, five hundred eighty-five".