134427520397 has 2 divisors, whose sum is σ = 134427520398. Its totient is φ = 134427520396.

The previous prime is 134427520351. The next prime is 134427520433. The reversal of 134427520397 is 793025724431.

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., 133410484516 + 1017035881 = 365254^2 + 31891^2 .

It is a cyclic number.

It is not a de Polignac number, because 134427520397 - 2²⁰ = 134426471821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (134427520307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67213760198 + 67213760199.

It is an arithmetic number, because the mean of its divisors is an integer number (67213760199).

Almost surely, 2^134427520397 is an apocalyptic number.

It is an amenable number.

134427520397 is a deficient number, since it is larger than the sum of its proper divisors (1).

134427520397 is an equidigital number, since it uses as much as digits as its factorization.

134427520397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1270080, while the sum is 47.

The spelling of 134427520397 in words is "one hundred thirty-four billion, four hundred twenty-seven million, five hundred twenty thousand, three hundred ninety-seven".