66663702345 has 32 divisors (see below), whose sum is σ = 109713030912. Its totient is φ = 34539892992.

The previous prime is 66663702317. The next prime is 66663702367. The reversal of 66663702345 is 54320736666.

It is not a de Polignac number, because 66663702345 - 2⁸ = 66663702089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66663702294 and 66663702303.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 270444 + ... + 454386.

It is an arithmetic number, because the mean of its divisors is an integer number (3428532216).

Almost surely, 2^66663702345 is an apocalyptic number.

It is an amenable number.

66663702345 is a deficient number, since it is larger than the sum of its proper divisors (43049328567).

66663702345 is a wasteful number, since it uses less digits than its factorization.

66663702345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184641.

The product of its (nonzero) digits is 3265920, while the sum is 48.

The spelling of 66663702345 in words is "sixty-six billion, six hundred sixty-three million, seven hundred two thousand, three hundred forty-five".