134085491921 has 2 divisors, whose sum is σ = 134085491922. Its totient is φ = 134085491920.

The previous prime is 134085491899. The next prime is 134085491987. The reversal of 134085491921 is 129194580431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 133586595025 + 498896896 = 365495^2 + 22336^2 .

It is a cyclic number.

It is not a de Polignac number, because 134085491921 - 2¹⁰ = 134085490897 is a prime.

It is not a weakly prime, because it can be changed into another prime (134085491521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67042745960 + 67042745961.

It is an arithmetic number, because the mean of its divisors is an integer number (67042745961).

Almost surely, 2^134085491921 is an apocalyptic number.

It is an amenable number.

134085491921 is a deficient number, since it is larger than the sum of its proper divisors (1).

134085491921 is an equidigital number, since it uses as much as digits as its factorization.

134085491921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 311040, while the sum is 47.

The spelling of 134085491921 in words is "one hundred thirty-four billion, eighty-five million, four hundred ninety-one thousand, nine hundred twenty-one".