66825044242 has 16 divisors (see below), whose sum is σ = 109374056064. Its totient is φ = 30368358000.

The previous prime is 66825044239. The next prime is 66825044263. The reversal of 66825044242 is 24244052866.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 229809 + ... + 431812.

It is an arithmetic number, because the mean of its divisors is an integer number (6835878504).

Almost surely, 2^66825044242 is an apocalyptic number.

66825044242 is a deficient number, since it is larger than the sum of its proper divisors (42549011822).

66825044242 is a wasteful number, since it uses less digits than its factorization.

66825044242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 666225.

The product of its (nonzero) digits is 737280, while the sum is 43.

The spelling of 66825044242 in words is "sixty-six billion, eight hundred twenty-five million, forty-four thousand, two hundred forty-two".