134543654251 has 4 divisors (see below), whose sum is σ = 142457986872. Its totient is φ = 126629321632.

The previous prime is 134543654209. The next prime is 134543654257. The reversal of 134543654251 is 152456345431.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-134543654251 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 134543654198 and 134543654207.

It is not an unprimeable number, because it can be changed into a prime (134543654257) 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, 3957166285 + ... + 3957166318.

It is an arithmetic number, because the mean of its divisors is an integer number (35614496718).

Almost surely, 2^134543654251 is an apocalyptic number.

134543654251 is a deficient number, since it is larger than the sum of its proper divisors (7914332621).

134543654251 is an equidigital number, since it uses as much as digits as its factorization.

134543654251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7914332620.

The product of its digits is 864000, while the sum is 43.

Adding to 134543654251 its reverse (152456345431), we get a palindrome (286999999682).

The spelling of 134543654251 in words is "one hundred thirty-four billion, five hundred forty-three million, six hundred fifty-four thousand, two hundred fifty-one".