55144224136 has 32 divisors (see below), whose sum is σ = 105259095000. Its totient is φ = 27079292416.

The previous prime is 55144224073. The next prime is 55144224173. The reversal of 55144224136 is 63142244155.

It can be written as a sum of positive squares in 4 ways, for example, as 24866136100 + 30278088036 = 157690^2 + 174006^2 .

It is a super-2 number, since 2×55144224136² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 55144224095 and 55144224104.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 153811 + ... + 365986.

Almost surely, 2^55144224136 is an apocalyptic number.

It is an amenable number.

55144224136 is a deficient number, since it is larger than the sum of its proper divisors (50114870864).

55144224136 is a wasteful number, since it uses less digits than its factorization.

55144224136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520041 (or 520037 counting only the distinct ones).

The product of its digits is 115200, while the sum is 37.

The spelling of 55144224136 in words is "fifty-five billion, one hundred forty-four million, two hundred twenty-four thousand, one hundred thirty-six".