134621631533 has 2 divisors, whose sum is σ = 134621631534. Its totient is φ = 134621631532.

The previous prime is 134621631509. The next prime is 134621631539. The reversal of 134621631533 is 335136126431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 99188463364 + 35433168169 = 314942^2 + 188237^2 .

It is a cyclic number.

It is not a de Polignac number, because 134621631533 - 2¹⁶ = 134621565997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (134621631539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67310815766 + 67310815767.

It is an arithmetic number, because the mean of its divisors is an integer number (67310815767).

Almost surely, 2^134621631533 is an apocalyptic number.

It is an amenable number.

134621631533 is a deficient number, since it is larger than the sum of its proper divisors (1).

134621631533 is an equidigital number, since it uses as much as digits as its factorization.

134621631533 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 116640, while the sum is 38.

Adding to 134621631533 its reverse (335136126431), we get a palindrome (469757757964).

The spelling of 134621631533 in words is "one hundred thirty-four billion, six hundred twenty-one million, six hundred thirty-one thousand, five hundred thirty-three".