66854313320752 has 20 divisors (see below), whose sum is σ = 129539198398176. Its totient is φ = 33424842766400.

The previous prime is 66854313320701. The next prime is 66854313320789. The reversal of 66854313320752 is 25702331345866.

It is a junction number, because it is equal to n+sod(n) for n = 66854313320693 and 66854313320702.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144379999 + ... + 144842302.

Almost surely, 2^{66854313320752} is an apocalyptic number.

It is an amenable number.

66854313320752 is a deficient number, since it is larger than the sum of its proper divisors (62684885077424).

66854313320752 is a wasteful number, since it uses less digits than its factorization.

66854313320752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289236756 (or 289236750 counting only the distinct ones).

The product of its (nonzero) digits is 21772800, while the sum is 55.

The spelling of 66854313320752 in words is "sixty-six trillion, eight hundred fifty-four billion, three hundred thirteen million, three hundred twenty thousand, seven hundred fifty-two".