55638775328 has 24 divisors (see below), whose sum is σ = 110236548492. Its totient is φ = 27642191616.

The previous prime is 55638775327. The next prime is 55638775337. The reversal of 55638775328 is 82357783655.

It can be written as a sum of positive squares in 2 ways, for example, as 52161078544 + 3477696784 = 228388^2 + 58972^2 .

It is not an unprimeable number, because it can be changed into a prime (55638775321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5532275 + ... + 5542322.

Almost surely, 2^55638775328 is an apocalyptic number.

It is an amenable number.

55638775328 is a deficient number, since it is larger than the sum of its proper divisors (54597773164).

55638775328 is a wasteful number, since it uses less digits than its factorization.

55638775328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11074764 (or 11074756 counting only the distinct ones).

The product of its digits is 42336000, while the sum is 59.

The spelling of 55638775328 in words is "fifty-five billion, six hundred thirty-eight million, seven hundred seventy-five thousand, three hundred twenty-eight".