66345616332 has 36 divisors (see below), whose sum is σ = 173116879936. Its totient is φ = 21401811360.

The previous prime is 66345616327. The next prime is 66345616333. The reversal of 66345616332 is 23361654366.

66345616332 is a `hidden beast` number, since 6 + 6 + 3 + 4 + 5 + 6 + 1 + 633 + 2 = 666.

66345616332 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (66345616333) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29723623 + ... + 29725854.

Almost surely, 2^66345616332 is an apocalyptic number.

66345616332 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

66345616332 is an abundant number, since it is smaller than the sum of its proper divisors (106771263604).

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

66345616332 is a wasteful number, since it uses less digits than its factorization.

66345616332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59449518 (or 59449513 counting only the distinct ones).

The product of its digits is 1399680, while the sum is 45.

The spelling of 66345616332 in words is "sixty-six billion, three hundred forty-five million, six hundred sixteen thousand, three hundred thirty-two".