154859084289121 has 3 divisors (see below), whose sum is σ = 154859096733361. Its totient is φ = 154859071844882.

The previous prime is 154859084289113. The next prime is 154859084289187. The reversal of 154859084289121 is 121982480958451.

The square root of 154859084289121 is 12444239.

It is a perfect power (a square), and thus also a powerful number.

154859084289121 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 brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 154859084289121 - 2³ = 154859084289113 is a prime.

It is a super-4 number, since 4×154859084289121⁴ (a number of 58 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (154859084289421) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 6222120 + ... + 18666358.

Almost surely, 2^{154859084289121} is an apocalyptic number.

154859084289121 is the 12444239-th square number.

154859084289121 is the 6222120-th centered octagonal number.

It is an amenable number.

154859084289121 is a deficient number, since it is larger than the sum of its proper divisors (12444240).

154859084289121 is an frugal number, since it uses more digits than its factorization.

154859084289121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24888478 (or 12444239 counting only the distinct ones).

The product of its (nonzero) digits is 66355200, while the sum is 67.

The spelling of 154859084289121 in words is "one hundred fifty-four trillion, eight hundred fifty-nine billion, eighty-four million, two hundred eighty-nine thousand, one hundred twenty-one".