66530442930 has 64 divisors (see below), whose sum is σ = 186934341888. Its totient is φ = 14836055040.

The previous prime is 66530442917. The next prime is 66530442941. The reversal of 66530442930 is 3924403566.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3854947 + ... + 3872166.

It is an arithmetic number, because the mean of its divisors is an integer number (2920849092).

Almost surely, 2^66530442930 is an apocalyptic number.

66530442930 is an abundant number, since it is smaller than the sum of its proper divisors (120403898958).

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

66530442930 is a wasteful number, since it uses less digits than its factorization.

66530442930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7727171.

The product of its (nonzero) digits is 466560, while the sum is 42.

The spelling of 66530442930 in words is "sixty-six billion, five hundred thirty million, four hundred forty-two thousand, nine hundred thirty".