66631963130 has 8 divisors (see below), whose sum is σ = 119937533652. Its totient is φ = 26652785248.

The previous prime is 66631963117. The next prime is 66631963157. The reversal of 66631963130 is 3136913666.

It can be written as a sum of positive squares in 2 ways, for example, as 59249888569 + 7382074561 = 243413^2 + 85919^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3331598147 + ... + 3331598166.

Almost surely, 2^66631963130 is an apocalyptic number.

66631963130 is a deficient number, since it is larger than the sum of its proper divisors (53305570522).

66631963130 is a wasteful number, since it uses less digits than its factorization.

66631963130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6663196320.

The product of its (nonzero) digits is 314928, while the sum is 44.

The spelling of 66631963130 in words is "sixty-six billion, six hundred thirty-one million, nine hundred sixty-three thousand, one hundred thirty".