55681065708 has 12 divisors (see below), whose sum is σ = 129922486680. Its totient is φ = 18560355232.

The previous prime is 55681065697. The next prime is 55681065709. The reversal of 55681065708 is 80756018655.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×55681065708² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55681065709) 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, 2320044393 + ... + 2320044416.

It is an arithmetic number, because the mean of its divisors is an integer number (10826873890).

Almost surely, 2^55681065708 is an apocalyptic number.

It is an amenable number.

55681065708 is an abundant number, since it is smaller than the sum of its proper divisors (74241420972).

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

55681065708 is a wasteful number, since it uses less digits than its factorization.

55681065708 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4640088816 (or 4640088814 counting only the distinct ones).

The product of its (nonzero) digits is 2016000, while the sum is 51.

The spelling of 55681065708 in words is "fifty-five billion, six hundred eighty-one million, sixty-five thousand, seven hundred eight".