134129748481 has 4 divisors (see below), whose sum is σ = 134132327892. Its totient is φ = 134127169072.

The previous prime is 134129748461. The next prime is 134129748509. The reversal of 134129748481 is 184847921431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 184847921431 = 17 ⋅10873407143.

It can be written as a sum of positive squares in 2 ways, for example, as 114368417856 + 19761330625 = 338184^2 + 140575^2 .

It is a cyclic number.

It is not a de Polignac number, because 134129748481 - 2¹³ = 134129740289 is a prime.

It is a super-2 number, since 2×134129748481² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (134129748421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1210066 + ... + 1316251.

It is an arithmetic number, because the mean of its divisors is an integer number (33533081973).

Almost surely, 2^134129748481 is an apocalyptic number.

It is an amenable number.

134129748481 is a deficient number, since it is larger than the sum of its proper divisors (2579411).

134129748481 is an equidigital number, since it uses as much as digits as its factorization.

134129748481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2579410.

The product of its digits is 1548288, while the sum is 52.

The spelling of 134129748481 in words is "one hundred thirty-four billion, one hundred twenty-nine million, seven hundred forty-eight thousand, four hundred eighty-one".