66229652016 has 180 divisors, whose sum is σ = 210759843840. Its totient is φ = 19377388800.

The previous prime is 66229651991. The next prime is 66229652033. The reversal of 66229652016 is 61025692266.

It is a happy number.

66229652016 is a `hidden beast` number, since 6 + 6 + 22 + 96 + 520 + 16 = 666.

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 35 ways as a sum of consecutive naturals, for example, 439761 + ... + 570831.

Almost surely, 2^66229652016 is an apocalyptic number.

66229652016 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66229652016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105379921920).

66229652016 is an abundant number, since it is smaller than the sum of its proper divisors (144530191824).

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

66229652016 is a wasteful number, since it uses less digits than its factorization.

66229652016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131136 (or 131116 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 45.

The spelling of 66229652016 in words is "sixty-six billion, two hundred twenty-nine million, six hundred fifty-two thousand, sixteen".