66552145554 has 8 divisors (see below), whose sum is σ = 133104291120. Its totient is φ = 22184048516.

The previous prime is 66552145537. The next prime is 66552145589. The reversal of 66552145554 is 45554125566.

It is a sphenic number, since it is the product of 3 distinct primes.

66552145554 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5546012124 + ... + 5546012135.

It is an arithmetic number, because the mean of its divisors is an integer number (16638036390).

Almost surely, 2^66552145554 is an apocalyptic number.

66552145554 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

66552145554 is a wasteful number, since it uses less digits than its factorization.

66552145554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11092024264.

The product of its digits is 3600000, while the sum is 48.

The spelling of 66552145554 in words is "sixty-six billion, five hundred fifty-two million, one hundred forty-five thousand, five hundred fifty-four".