66717038402 has 8 divisors (see below), whose sum is σ = 114372065856. Its totient is φ = 28593016452.

The previous prime is 66717038393. The next prime is 66717038417. The reversal of 66717038402 is 20483071766.

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 (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2382751358 + ... + 2382751385.

It is an arithmetic number, because the mean of its divisors is an integer number (14296508232).

Almost surely, 2^66717038402 is an apocalyptic number.

66717038402 is a deficient number, since it is larger than the sum of its proper divisors (47655027454).

66717038402 is a wasteful number, since it uses less digits than its factorization.

66717038402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4765502752.

The product of its (nonzero) digits is 338688, while the sum is 44.

The spelling of 66717038402 in words is "sixty-six billion, seven hundred seventeen million, thirty-eight thousand, four hundred two".