154421534544 has 80 divisors (see below), whose sum is σ = 411889780224. Its totient is φ = 49801420800.

The previous prime is 154421534447. The next prime is 154421534557. The reversal of 154421534544 is 445435124451.

It is a junction number, because it is equal to n+sod(n) for n = 154421534496 and 154421534505.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7836384 + ... + 7856064.

Almost surely, 2^154421534544 is an apocalyptic number.

It is an amenable number.

154421534544 is an abundant number, since it is smaller than the sum of its proper divisors (257468245680).

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

154421534544 is a wasteful number, since it uses less digits than its factorization.

154421534544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24996 (or 24990 counting only the distinct ones).

The product of its digits is 768000, while the sum is 42.

Adding to 154421534544 its reverse (445435124451), we get a palindrome (599856658995).

The spelling of 154421534544 in words is "one hundred fifty-four billion, four hundred twenty-one million, five hundred thirty-four thousand, five hundred forty-four".