66430737242 has 32 divisors (see below), whose sum is σ = 107729481600. Its totient is φ = 30610027008.

The previous prime is 66430737209. The next prime is 66430737251. The reversal of 66430737242 is 24273703466.

It is a junction number, because it is equal to n+sod(n) for n = 66430737193 and 66430737202.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 205109 + ... + 418247.

It is an arithmetic number, because the mean of its divisors is an integer number (3366546300).

Almost surely, 2^66430737242 is an apocalyptic number.

66430737242 is a deficient number, since it is larger than the sum of its proper divisors (41298744358).

66430737242 is a wasteful number, since it uses less digits than its factorization.

66430737242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213350.

The product of its (nonzero) digits is 1016064, while the sum is 44.

The spelling of 66430737242 in words is "sixty-six billion, four hundred thirty million, seven hundred thirty-seven thousand, two hundred forty-two".