154642323506 has 16 divisors (see below), whose sum is σ = 261776975040. Its totient is φ = 67868104080.

The previous prime is 154642323487. The next prime is 154642323523. The reversal of 154642323506 is 605323246451.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121192406 + ... + 121193681.

It is an arithmetic number, because the mean of its divisors is an integer number (16361060940).

Almost surely, 2^154642323506 is an apocalyptic number.

154642323506 is a deficient number, since it is larger than the sum of its proper divisors (107134651534).

154642323506 is a wasteful number, since it uses less digits than its factorization.

154642323506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242386129.

The product of its (nonzero) digits is 518400, while the sum is 41.

Adding to 154642323506 its reverse (605323246451), we get a palindrome (759965569957).

The spelling of 154642323506 in words is "one hundred fifty-four billion, six hundred forty-two million, three hundred twenty-three thousand, five hundred six".