55809767488 has 28 divisors (see below), whose sum is σ = 110893133052. Its totient is φ = 27868190720.

The previous prime is 55809767443. The next prime is 55809767501. The reversal of 55809767488 is 88476790855.

It can be written as a sum of positive squares in 2 ways, for example, as 26415350784 + 29394416704 = 162528^2 + 171448^2 .

It is a super-2 number, since 2×55809767488² (a number of 22 digits) contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 524245 + ... + 621652.

Almost surely, 2^55809767488 is an apocalyptic number.

It is an amenable number.

55809767488 is a deficient number, since it is larger than the sum of its proper divisors (55083365564).

55809767488 is a wasteful number, since it uses less digits than its factorization.

55809767488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1146670 (or 1146660 counting only the distinct ones).

The product of its (nonzero) digits is 135475200, while the sum is 67.

The spelling of 55809767488 in words is "fifty-five billion, eight hundred nine million, seven hundred sixty-seven thousand, four hundred eighty-eight".