155400444441 has 24 divisors (see below), whose sum is σ = 245109271680. Its totient is φ = 94091378400.

The previous prime is 155400444431. The next prime is 155400444487. The reversal of 155400444441 is 144444004551.

It is not a de Polignac number, because 155400444441 - 2⁷ = 155400444313 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 155400444396 and 155400444405.

It is not an unprimeable number, because it can be changed into a prime (155400444431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 652530 + ... + 858251.

It is an arithmetic number, because the mean of its divisors is an integer number (10212886320).

Almost surely, 2^155400444441 is an apocalyptic number.

155400444441 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

155400444441 is a deficient number, since it is larger than the sum of its proper divisors (89708827239).

155400444441 is a wasteful number, since it uses less digits than its factorization.

155400444441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1511837 (or 1511834 counting only the distinct ones).

The product of its (nonzero) digits is 102400, while the sum is 36.

Adding to 155400444441 its reverse (144444004551), we get a palindrome (299844448992).

The spelling of 155400444441 in words is "one hundred fifty-five billion, four hundred million, four hundred forty-four thousand, four hundred forty-one".