66633602402 has 16 divisors (see below), whose sum is σ = 101341445112. Its totient is φ = 32853317760.

The previous prime is 66633602363. The next prime is 66633602429. The reversal of 66633602402 is 20420633666.

It can be written as a sum of positive squares in 4 ways, for example, as 49296876841 + 17336725561 = 222029^2 + 131669^2 .

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 665252 + ... + 758832.

Almost surely, 2^66633602402 is an apocalyptic number.

66633602402 is a deficient number, since it is larger than the sum of its proper divisors (34707842710).

66633602402 is a wasteful number, since it uses less digits than its factorization.

66633602402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98533.

The product of its (nonzero) digits is 186624, while the sum is 38.

The spelling of 66633602402 in words is "sixty-six billion, six hundred thirty-three million, six hundred two thousand, four hundred two".