154021311145 has 64 divisors (see below), whose sum is σ = 206003165760. Its totient is φ = 110478950400.

The previous prime is 154021311137. The next prime is 154021311149. The reversal of 154021311145 is 541113120451.

It is a happy number.

154021311145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 32 ways, for example, as 113286769561 + 40734541584 = 336581^2 + 201828^2 .

It is not a de Polignac number, because 154021311145 - 2³ = 154021311137 is a prime.

It is a super-2 number, since 2×154021311145² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (154021311149) 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 63 ways as a sum of consecutive naturals, for example, 126557577 + ... + 126558793.

It is an arithmetic number, because the mean of its divisors is an integer number (3218799465).

Almost surely, 2^154021311145 is an apocalyptic number.

It is an amenable number.

154021311145 is a deficient number, since it is larger than the sum of its proper divisors (51981854615).

154021311145 is a wasteful number, since it uses less digits than its factorization.

154021311145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1583 (or 1557 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 28.

Adding to 154021311145 its reverse (541113120451), we get a palindrome (695134431596).

The spelling of 154021311145 in words is "one hundred fifty-four billion, twenty-one million, three hundred eleven thousand, one hundred forty-five".