66339456012 has 108 divisors (see below), whose sum is σ = 174904454088. Its totient is φ = 21198643200.

The previous prime is 66339455993. The next prime is 66339456041. The reversal of 66339456012 is 21065493366.

66339456012 is a `hidden beast` number, since 6 + 6 + 3 + 39 + 4 + 5 + 601 + 2 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 3692812 + ... + 3710732.

It is an arithmetic number, because the mean of its divisors is an integer number (1619485686).

Almost surely, 2^66339456012 is an apocalyptic number.

66339456012 is a gapful number since it is divisible by the number (62) 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 66339456012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87452227044).

66339456012 is an abundant number, since it is smaller than the sum of its proper divisors (108564998076).

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

66339456012 is a wasteful number, since it uses less digits than its factorization.

66339456012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18100 (or 18064 counting only the distinct ones).

The product of its (nonzero) digits is 699840, while the sum is 45.

The spelling of 66339456012 in words is "sixty-six billion, three hundred thirty-nine million, four hundred fifty-six thousand, twelve".