154143513121 has 32 divisors (see below), whose sum is σ = 175674756096. Its totient is φ = 134231040000.

The previous prime is 154143513119. The next prime is 154143513127. The reversal of 154143513121 is 121315341451.

It is a happy number.

154143513121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 154143513121 - 2¹ = 154143513119 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is not an unprimeable number, because it can be changed into a prime (154143513127) 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 31 ways as a sum of consecutive naturals, for example, 26450410 + ... + 26456236.

It is an arithmetic number, because the mean of its divisors is an integer number (5489836128).

Almost surely, 2^154143513121 is an apocalyptic number.

It is an amenable number.

154143513121 is a deficient number, since it is larger than the sum of its proper divisors (21531242975).

154143513121 is a wasteful number, since it uses less digits than its factorization.

154143513121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7513.

The product of its digits is 7200, while the sum is 31.

Adding to 154143513121 its reverse (121315341451), we get a palindrome (275458854572).

The spelling of 154143513121 in words is "one hundred fifty-four billion, one hundred forty-three million, five hundred thirteen thousand, one hundred twenty-one".