154491048205 has 16 divisors (see below), whose sum is σ = 199838230704. Its totient is φ = 113978119680.

The previous prime is 154491048193. The next prime is 154491048211. The reversal of 154491048205 is 502840194451.

It can be written as a sum of positive squares in 8 ways, for example, as 2089038436 + 152402009769 = 45706^2 + 390387^2 .

It is not a de Polignac number, because 154491048205 - 2⁷ = 154491048077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1051104 + ... + 1189033.

It is an arithmetic number, because the mean of its divisors is an integer number (12489889419).

Almost surely, 2^154491048205 is an apocalyptic number.

It is an amenable number.

154491048205 is a deficient number, since it is larger than the sum of its proper divisors (45347182499).

154491048205 is a wasteful number, since it uses less digits than its factorization.

154491048205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2241216.

The product of its (nonzero) digits is 230400, while the sum is 43.

The spelling of 154491048205 in words is "one hundred fifty-four billion, four hundred ninety-one million, forty-eight thousand, two hundred five".