154251324021 has 16 divisors (see below), whose sum is σ = 208256154624. Its totient is φ = 101541662064.

The previous prime is 154251323971. The next prime is 154251324047. The reversal of 154251324021 is 120423152451.

154251324021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 154251324021 - 2²² = 154247129717 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 154251324021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154251329021) 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 15 ways as a sum of consecutive naturals, for example, 312420 + ... + 637266.

It is an arithmetic number, because the mean of its divisors is an integer number (13016009664).

Almost surely, 2^154251324021 is an apocalyptic number.

It is an amenable number.

154251324021 is a deficient number, since it is larger than the sum of its proper divisors (54004830603).

154251324021 is a wasteful number, since it uses less digits than its factorization.

154251324021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326840.

The product of its (nonzero) digits is 9600, while the sum is 30.

Adding to 154251324021 its reverse (120423152451), we get a palindrome (274674476472).

The spelling of 154251324021 in words is "one hundred fifty-four billion, two hundred fifty-one million, three hundred twenty-four thousand, twenty-one".