154609952309 has 16 divisors (see below), whose sum is σ = 172465562880. Its totient is φ = 137740654080.

The previous prime is 154609952269. The next prime is 154609952311. The reversal of 154609952309 is 903259906451.

It is a cyclic number.

It is not a de Polignac number, because 154609952309 - 2²⁰ = 154608903733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154609952339) 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 15 ways as a sum of consecutive naturals, for example, 184724 + ... + 585954.

It is an arithmetic number, because the mean of its divisors is an integer number (10779097680).

Almost surely, 2^154609952309 is an apocalyptic number.

154609952309 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

154609952309 is a deficient number, since it is larger than the sum of its proper divisors (17855610571).

154609952309 is a wasteful number, since it uses less digits than its factorization.

154609952309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402460.

The product of its (nonzero) digits is 2624400, while the sum is 53.

The spelling of 154609952309 in words is "one hundred fifty-four billion, six hundred nine million, nine hundred fifty-two thousand, three hundred nine".