154135531012423 has 4 divisors (see below), whose sum is σ = 154148585613120. Its totient is φ = 154122476411728.

The previous prime is 154135531012409. The next prime is 154135531012447. The reversal of 154135531012423 is 324210135531451.

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

It is a cyclic number.

It is not a de Polignac number, because 154135531012423 - 2⁹ = 154135531011911 is a prime.

It is a super-2 number, since 2×154135531012423² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154135531012483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6527282638 + ... + 6527306251.

It is an arithmetic number, because the mean of its divisors is an integer number (38537146403280).

Almost surely, 2^{154135531012423} is an apocalyptic number.

154135531012423 is a deficient number, since it is larger than the sum of its proper divisors (13054600697).

154135531012423 is a wasteful number, since it uses less digits than its factorization.

154135531012423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13054600696.

The product of its (nonzero) digits is 216000, while the sum is 40.

Adding to 154135531012423 its reverse (324210135531451), we get a palindrome (478345666543874).

The spelling of 154135531012423 in words is "one hundred fifty-four trillion, one hundred thirty-five billion, five hundred thirty-one million, twelve thousand, four hundred twenty-three".