66197359930 has 32 divisors (see below), whose sum is σ = 128333447424. Its totient is φ = 24439738176.

The previous prime is 66197359913. The next prime is 66197359931. The reversal of 66197359930 is 3995379166.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (66197359931) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1902469 + ... + 1936951.

It is an arithmetic number, because the mean of its divisors is an integer number (4010420232).

Almost surely, 2^66197359930 is an apocalyptic number.

66197359930 is a deficient number, since it is larger than the sum of its proper divisors (62136087494).

66197359930 is a wasteful number, since it uses less digits than its factorization.

66197359930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49270.

The product of its (nonzero) digits is 8266860, while the sum is 58.

The spelling of 66197359930 in words is "sixty-six billion, one hundred ninety-seven million, three hundred fifty-nine thousand, nine hundred thirty".