66066246642 has 32 divisors (see below), whose sum is σ = 145764152640. Its totient is φ = 19795128320.

The previous prime is 66066246641. The next prime is 66066246643. The reversal of 66066246642 is 24664266066.

It is an interprime number because it is at equal distance from previous prime (66066246641) and next prime (66066246643).

It is a junction number, because it is equal to n+sod(n) for n = 66066246591 and 66066246600.

It is not an unprimeable number, because it can be changed into a prime (66066246641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5617743 + ... + 5629490.

It is an arithmetic number, because the mean of its divisors is an integer number (4555129770).

Almost surely, 2^66066246642 is an apocalyptic number.

66066246642 is an abundant number, since it is smaller than the sum of its proper divisors (79697905998).

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

66066246642 is a wasteful number, since it uses less digits than its factorization.

66066246642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11247338.

The product of its (nonzero) digits is 2985984, while the sum is 48.

The spelling of 66066246642 in words is "sixty-six billion, sixty-six million, two hundred forty-six thousand, six hundred forty-two".