66552206457 has 8 divisors (see below), whose sum is σ = 96803209440. Its totient is φ = 40334670560.

The previous prime is 66552206449. The next prime is 66552206521. The reversal of 66552206457 is 75460225566.

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

It is a cyclic number.

It is not a de Polignac number, because 66552206457 - 2³ = 66552206449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66552206417) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1008366732 + ... + 1008366797.

It is an arithmetic number, because the mean of its divisors is an integer number (12100401180).

Almost surely, 2^66552206457 is an apocalyptic number.

It is an amenable number.

66552206457 is a deficient number, since it is larger than the sum of its proper divisors (30251002983).

66552206457 is a wasteful number, since it uses less digits than its factorization.

66552206457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2016733543.

The product of its (nonzero) digits is 3024000, while the sum is 48.

The spelling of 66552206457 in words is "sixty-six billion, five hundred fifty-two million, two hundred six thousand, four hundred fifty-seven".