134621631509 has 2 divisors, whose sum is σ = 134621631510. Its totient is φ = 134621631508.

The previous prime is 134621631481. The next prime is 134621631533. The reversal of 134621631509 is 905136126431.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 87030900100 + 47590731409 = 295010^2 + 218153^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-134621631509 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 polite number, since it can be written as a sum of consecutive naturals, namely, 67310815754 + 67310815755.

It is an arithmetic number, because the mean of its divisors is an integer number (67310815755).

Almost surely, 2^134621631509 is an apocalyptic number.

It is an amenable number.

134621631509 is a deficient number, since it is larger than the sum of its proper divisors (1).

134621631509 is an equidigital number, since it uses as much as digits as its factorization.

134621631509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 116640, while the sum is 41.

The spelling of 134621631509 in words is "one hundred thirty-four billion, six hundred twenty-one million, six hundred thirty-one thousand, five hundred nine".