154143513122 has 4 divisors (see below), whose sum is σ = 231215269686. Its totient is φ = 77071756560.

The previous prime is 154143513119. The next prime is 154143513127. The reversal of 154143513122 is 221315341451.

154143513122 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.

It can be written as a sum of positive squares in only one way, i.e., 122661753361 + 31481759761 = 350231^2 + 177431^2 .

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 as a sum of consecutive naturals, namely, 38535878279 + ... + 38535878282.

Almost surely, 2^154143513122 is an apocalyptic number.

154143513122 is a deficient number, since it is larger than the sum of its proper divisors (77071756564).

154143513122 is an equidigital number, since it uses as much as digits as its factorization.

154143513122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77071756563.

The product of its digits is 14400, while the sum is 32.

Adding to 154143513122 its reverse (221315341451), we get a palindrome (375458854573).

The spelling of 154143513122 in words is "one hundred fifty-four billion, one hundred forty-three million, five hundred thirteen thousand, one hundred twenty-two".