133413215261 has 2 divisors, whose sum is σ = 133413215262. Its totient is φ = 133413215260.

The previous prime is 133413215251. The next prime is 133413215269. The reversal of 133413215261 is 162512314331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 125280602500 + 8132612761 = 353950^2 + 90181^2 .

It is a cyclic number.

It is not a de Polignac number, because 133413215261 - 2¹⁰ = 133413214237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133413215269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66706607630 + 66706607631.

It is an arithmetic number, because the mean of its divisors is an integer number (66706607631).

Almost surely, 2^133413215261 is an apocalyptic number.

It is an amenable number.

133413215261 is a deficient number, since it is larger than the sum of its proper divisors (1).

133413215261 is an equidigital number, since it uses as much as digits as its factorization.

133413215261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12960, while the sum is 32.

Adding to 133413215261 its reverse (162512314331), we get a palindrome (295925529592).

The spelling of 133413215261 in words is "one hundred thirty-three billion, four hundred thirteen million, two hundred fifteen thousand, two hundred sixty-one".