55231125644448 has 72 divisors (see below), whose sum is σ = 169145322297588. Its totient is φ = 16994192504832.

The previous prime is 55231125644423. The next prime is 55231125644449. The reversal of 55231125644448 is 84444652113255.

55231125644448 is a `hidden beast` number, since 5 + 5 + 2 + 31 + 1 + 2 + 564 + 4 + 4 + 48 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 51800436351504 + 3430689292944 = 7197252^2 + 1852212^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a junction number, because it is equal to n+sod(n) for n = 55231125644394 and 55231125644403.

It is not an unprimeable number, because it can be changed into a prime (55231125644449) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7375947865 + ... + 7375955352.

Almost surely, 2^{55231125644448} is an apocalyptic number.

It is an amenable number.

55231125644448 is an abundant number, since it is smaller than the sum of its proper divisors (113914196653140).

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

55231125644448 is a wasteful number, since it uses less digits than its factorization.

55231125644448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14751903246 (or 14751903235 counting only the distinct ones).

The product of its digits is 18432000, while the sum is 54.

The spelling of 55231125644448 in words is "fifty-five trillion, two hundred thirty-one billion, one hundred twenty-five million, six hundred forty-four thousand, four hundred forty-eight".