66134436216 has 32 divisors (see below), whose sum is σ = 165347952000. Its totient is φ = 22043230560.

The previous prime is 66134436197. The next prime is 66134436227. The reversal of 66134436216 is 61263443166.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 270885 + ... + 453483.

It is an arithmetic number, because the mean of its divisors is an integer number (5167123500).

Almost surely, 2^66134436216 is an apocalyptic number.

It is an amenable number.

66134436216 is an abundant number, since it is smaller than the sum of its proper divisors (99213515784).

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

66134436216 is a wasteful number, since it uses less digits than its factorization.

66134436216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197699 (or 197695 counting only the distinct ones).

The product of its digits is 373248, while the sum is 42.

The spelling of 66134436216 in words is "sixty-six billion, one hundred thirty-four million, four hundred thirty-six thousand, two hundred sixteen".