66130345242 has 48 divisors (see below), whose sum is σ = 159130241280. Its totient is φ = 20347795728.

The previous prime is 66130345189. The next prime is 66130345247. The reversal of 66130345242 is 24254303166.

66130345242 is a `hidden beast` number, since 6 + 613 + 0 + 34 + 5 + 2 + 4 + 2 = 666.

It is a super-2 number, since 2×66130345242² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 66130345197 and 66130345206.

It is not an unprimeable number, because it can be changed into a prime (66130345247) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3614058 + ... + 3632309.

It is an arithmetic number, because the mean of its divisors is an integer number (3315213360).

Almost surely, 2^66130345242 is an apocalyptic number.

66130345242 is an abundant number, since it is smaller than the sum of its proper divisors (92999896038).

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

66130345242 is a wasteful number, since it uses less digits than its factorization.

66130345242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7246404 (or 7246385 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 36.

The spelling of 66130345242 in words is "sixty-six billion, one hundred thirty million, three hundred forty-five thousand, two hundred forty-two".