66563340342 has 16 divisors (see below), whose sum is σ = 137717256240. Its totient is φ = 21422684192.

The previous prime is 66563340299. The next prime is 66563340343. The reversal of 66563340342 is 24304336566.

It is a junction number, because it is equal to n+sod(n) for n = 66563340294 and 66563340303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66563340343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 191273793 + ... + 191274140.

It is an arithmetic number, because the mean of its divisors is an integer number (8607328515).

Almost surely, 2^66563340342 is an apocalyptic number.

66563340342 is an abundant number, since it is smaller than the sum of its proper divisors (71153915898).

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

66563340342 is a wasteful number, since it uses less digits than its factorization.

66563340342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382547967.

The product of its (nonzero) digits is 933120, while the sum is 42.

The spelling of 66563340342 in words is "sixty-six billion, five hundred sixty-three million, three hundred forty thousand, three hundred forty-two".