66210384930 has 128 divisors (see below), whose sum is σ = 162163814400. Its totient is φ = 17299107840.

The previous prime is 66210384907. The next prime is 66210384937. The reversal of 66210384930 is 3948301266.

It is a super-2 number, since 2×66210384930² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (66210384937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 189714396 + ... + 189714744.

It is an arithmetic number, because the mean of its divisors is an integer number (1266904800).

Almost surely, 2^66210384930 is an apocalyptic number.

66210384930 is an abundant number, since it is smaller than the sum of its proper divisors (95953429470).

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

66210384930 is a wasteful number, since it uses less digits than its factorization.

66210384930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 956.

The product of its (nonzero) digits is 186624, while the sum is 42.

The spelling of 66210384930 in words is "sixty-six billion, two hundred ten million, three hundred eighty-four thousand, nine hundred thirty".