133861313535 has 24 divisors (see below), whose sum is σ = 215071894800. Its totient is φ = 71096002560.

The previous prime is 133861313519. The next prime is 133861313539. The reversal of 133861313535 is 535313168331.

It is not a de Polignac number, because 133861313535 - 2⁴ = 133861313519 is a prime.

It is a super-2 number, since 2×133861313535² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133861313539) 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 23 ways as a sum of consecutive naturals, for example, 794391 + ... + 948039.

It is an arithmetic number, because the mean of its divisors is an integer number (8961328950).

Almost surely, 2^133861313535 is an apocalyptic number.

133861313535 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

133861313535 is a deficient number, since it is larger than the sum of its proper divisors (81210581265).

133861313535 is an equidigital number, since it uses as much as digits as its factorization.

133861313535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154139 (or 153898 counting only the distinct ones).

The product of its digits is 291600, while the sum is 42.

The spelling of 133861313535 in words is "one hundred thirty-three billion, eight hundred sixty-one million, three hundred thirteen thousand, five hundred thirty-five".