154000861540 has 24 divisors (see below), whose sum is σ = 323768931192. Its totient is φ = 61530416640.

The previous prime is 154000861517. The next prime is 154000861571. The reversal of 154000861540 is 45168000451.

154000861540 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 4 ways, for example, as 2075531364 + 151925330176 = 45558^2 + 389776^2 .

It is a junction number, because it is equal to n+sod(n) for n = 154000861496 and 154000861505.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 4352439 + ... + 4387678.

It is an arithmetic number, because the mean of its divisors is an integer number (13490372133).

Almost surely, 2^154000861540 is an apocalyptic number.

154000861540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

154000861540 is an abundant number, since it is smaller than the sum of its proper divisors (169768069652).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

154000861540 is a wasteful number, since it uses less digits than its factorization.

154000861540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8741007 (or 8741005 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 34.

Adding to 154000861540 its reverse (45168000451), we get a palindrome (199168861991).

The spelling of 154000861540 in words is "one hundred fifty-four billion, eight hundred sixty-one thousand, five hundred forty".