55447747660 has 24 divisors (see below), whose sum is σ = 116775847440. Its totient is φ = 22115179584.

The previous prime is 55447747657. The next prime is 55447747661. The reversal of 55447747660 is 6674774455.

It is not an unprimeable number, because it can be changed into a prime (55447747661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3987855 + ... + 4001734.

It is an arithmetic number, because the mean of its divisors is an integer number (4865660310).

Almost surely, 2^55447747660 is an apocalyptic number.

It is an amenable number.

55447747660 is an abundant number, since it is smaller than the sum of its proper divisors (61328099780).

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

55447747660 is a wasteful number, since it uses less digits than its factorization.

55447747660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7989945 (or 7989943 counting only the distinct ones).

The product of its (nonzero) digits is 19756800, while the sum is 55.

The spelling of 55447747660 in words is "fifty-five billion, four hundred forty-seven million, seven hundred forty-seven thousand, six hundred sixty".