133438018065 has 16 divisors (see below), whose sum is σ = 232909995456. Its totient is φ = 64697220800.

The previous prime is 133438018061. The next prime is 133438018093. The reversal of 133438018065 is 560810834331.

It is not a de Polignac number, because 133438018065 - 2² = 133438018061 is a prime.

It is not an unprimeable number, because it can be changed into a prime (133438018061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 404357466 + ... + 404357795.

It is an arithmetic number, because the mean of its divisors is an integer number (14556874716).

Almost surely, 2^133438018065 is an apocalyptic number.

133438018065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

133438018065 is a deficient number, since it is larger than the sum of its proper divisors (99471977391).

133438018065 is a wasteful number, since it uses less digits than its factorization.

133438018065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 808715280.

The product of its (nonzero) digits is 207360, while the sum is 42.

The spelling of 133438018065 in words is "one hundred thirty-three billion, four hundred thirty-eight million, eighteen thousand, sixty-five".