55536866885 has 32 divisors (see below), whose sum is σ = 69774028800. Its totient is φ = 42385524480.

The previous prime is 55536866881. The next prime is 55536866893. The reversal of 55536866885 is 58866863555.

It is a happy number.

It is not a de Polignac number, because 55536866885 - 2² = 55536866881 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55536866881) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 8678507 + ... + 8684903.

It is an arithmetic number, because the mean of its divisors is an integer number (2180438400).

Almost surely, 2^55536866885 is an apocalyptic number.

It is an amenable number.

55536866885 is a deficient number, since it is larger than the sum of its proper divisors (14237161915).

55536866885 is a wasteful number, since it uses less digits than its factorization.

55536866885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7221.

The product of its digits is 207360000, while the sum is 65.

The spelling of 55536866885 in words is "fifty-five billion, five hundred thirty-six million, eight hundred sixty-six thousand, eight hundred eighty-five".