133044045551 has 4 divisors (see below), whose sum is σ = 133107012192. Its totient is φ = 132981078912.

The previous prime is 133044045523. The next prime is 133044045581. The reversal of 133044045551 is 155540440331.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133044045551 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133044045581) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31480151 + ... + 31484376.

It is an arithmetic number, because the mean of its divisors is an integer number (33276753048).

Almost surely, 2^133044045551 is an apocalyptic number.

133044045551 is a deficient number, since it is larger than the sum of its proper divisors (62966641).

133044045551 is an equidigital number, since it uses as much as digits as its factorization.

133044045551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62966640.

The product of its (nonzero) digits is 72000, while the sum is 35.

Adding to 133044045551 its reverse (155540440331), we get a palindrome (288584485882).

The spelling of 133044045551 in words is "one hundred thirty-three billion, forty-four million, forty-five thousand, five hundred fifty-one".