133810550869 has 4 divisors (see below), whose sum is σ = 133813762380. Its totient is φ = 133807339360.

The previous prime is 133810550843. The next prime is 133810550899. The reversal of 133810550869 is 968055018331.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 65917995025 + 67892555844 = 256745^2 + 260562^2 .

It is a cyclic number.

It is not a de Polignac number, because 133810550869 - 2⁵ = 133810550837 is a prime.

It is a super-2 number, since 2×133810550869² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133810550899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1542424 + ... + 1626865.

It is an arithmetic number, because the mean of its divisors is an integer number (33453440595).

Almost surely, 2^133810550869 is an apocalyptic number.

It is an amenable number.

133810550869 is a deficient number, since it is larger than the sum of its proper divisors (3211511).

133810550869 is an equidigital number, since it uses as much as digits as its factorization.

133810550869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3211510.

The product of its (nonzero) digits is 777600, while the sum is 49.

The spelling of 133810550869 in words is "one hundred thirty-three billion, eight hundred ten million, five hundred fifty thousand, eight hundred sixty-nine".