66212300004 has 24 divisors (see below), whose sum is σ = 154735657440. Its totient is φ = 22036439424.

The previous prime is 66212299997. The next prime is 66212300029. The reversal of 66212300004 is 40000321266.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 4282869 + ... + 4298300.

It is an arithmetic number, because the mean of its divisors is an integer number (6447319060).

Almost surely, 2^66212300004 is an apocalyptic number.

It is an amenable number.

66212300004 is an abundant number, since it is smaller than the sum of its proper divisors (88523357436).

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

66212300004 is a wasteful number, since it uses less digits than its factorization.

66212300004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8581819 (or 8581817 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The spelling of 66212300004 in words is "sixty-six billion, two hundred twelve million, three hundred thousand, four".