6660481554 has 16 divisors (see below), whose sum is σ = 14801070240. Its totient is φ = 2220160500.

The previous prime is 6660481543. The next prime is 6660481577. The reversal of 6660481554 is 4551840666.

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 7 ways as a sum of consecutive naturals, for example, 61671072 + ... + 61671179.

It is an arithmetic number, because the mean of its divisors is an integer number (925066890).

Almost surely, 2^6660481554 is an apocalyptic number.

6660481554 is an abundant number, since it is smaller than the sum of its proper divisors (8140588686).

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

6660481554 is a wasteful number, since it uses less digits than its factorization.

6660481554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123342262 (or 123342256 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 45.

The square root of 6660481554 is about 81611.7733786002. The cubic root of 6660481554 is about 1881.4898362834.

The spelling of 6660481554 in words is "six billion, six hundred sixty million, four hundred eighty-one thousand, five hundred fifty-four".