66496695012 has 60 divisors (see below), whose sum is σ = 189638732976. Its totient is φ = 20150512560.

The previous prime is 66496695011. The next prime is 66496695037. The reversal of 66496695012 is 21059669466.

66496695012 is a `hidden beast` number, since 66 + 496 + 6 + 95 + 0 + 1 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 66496695012.

It is not an unprimeable number, because it can be changed into a prime (66496695011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 9325378 + ... + 9332505.

Almost surely, 2^66496695012 is an apocalyptic number.

It is an amenable number.

66496695012 is an abundant number, since it is smaller than the sum of its proper divisors (123142037964).

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

66496695012 is a wasteful number, since it uses less digits than its factorization.

66496695012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18657910 (or 18657899 counting only the distinct ones).

The product of its (nonzero) digits is 4199040, while the sum is 54.

The spelling of 66496695012 in words is "sixty-six billion, four hundred ninety-six million, six hundred ninety-five thousand, twelve".