154205504161 has 4 divisors (see below), whose sum is σ = 154527436800. Its totient is φ = 153883571524.

The previous prime is 154205504147. The next prime is 154205504171. The reversal of 154205504161 is 161405502451.

154205504161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 161405502451 = 967 ⋅166913653.

It is a cyclic number.

It is not a de Polignac number, because 154205504161 - 2⁹ = 154205503649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (154205504111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 160965601 + ... + 160966558.

It is an arithmetic number, because the mean of its divisors is an integer number (38631859200).

Almost surely, 2^154205504161 is an apocalyptic number.

It is an amenable number.

154205504161 is a deficient number, since it is larger than the sum of its proper divisors (321932639).

154205504161 is an equidigital number, since it uses as much as digits as its factorization.

154205504161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321932638.

The product of its (nonzero) digits is 24000, while the sum is 34.

The spelling of 154205504161 in words is "one hundred fifty-four billion, two hundred five million, five hundred four thousand, one hundred sixty-one".