4155520144 has 20 divisors (see below), whose sum is σ = 8069265900. Its totient is φ = 2073128960.

The previous prime is 4155520121. The next prime is 4155520169. The reversal of 4155520144 is 4410255514.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 3598560144 + 556960000 = 59988^2 + 23600^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 282037 + ... + 296404.

It is an arithmetic number, because the mean of its divisors is an integer number (403463295).

Almost surely, 2^4155520144 is an apocalyptic number.

It is an amenable number.

4155520144 is a deficient number, since it is larger than the sum of its proper divisors (3913745756).

4155520144 is a wasteful number, since it uses less digits than its factorization.

4155520144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 578898 (or 578892 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 31.

The square root of 4155520144 is about 64463.3240222687. The cubic root of 4155520144 is about 1607.7127796529.

Adding to 4155520144 its reverse (4410255514), we get a palindrome (8565775658).

The spelling of 4155520144 in words is "four billion, one hundred fifty-five million, five hundred twenty thousand, one hundred forty-four".