133544004557 has 2 divisors, whose sum is σ = 133544004558. Its totient is φ = 133544004556.

The previous prime is 133544004511. The next prime is 133544004571. The reversal of 133544004557 is 755400445331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 103396974916 + 30147029641 = 321554^2 + 173629^2 .

It is a cyclic number.

It is not a de Polignac number, because 133544004557 - 2²⁰ = 133542955981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133544001557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66772002278 + 66772002279.

It is an arithmetic number, because the mean of its divisors is an integer number (66772002279).

Almost surely, 2^133544004557 is an apocalyptic number.

It is an amenable number.

133544004557 is a deficient number, since it is larger than the sum of its proper divisors (1).

133544004557 is an equidigital number, since it uses as much as digits as its factorization.

133544004557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504000, while the sum is 41.

Adding to 133544004557 its reverse (755400445331), we get a palindrome (888944449888).

The spelling of 133544004557 in words is "one hundred thirty-three billion, five hundred forty-four million, four thousand, five hundred fifty-seven".