66717644012363 has 8 divisors (see below), whose sum is σ = 67623984753600. Its totient is φ = 65812848611328.

The previous prime is 66717644012359. The next prime is 66717644012441. The reversal of 66717644012363 is 36321044671766.

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

It is a cyclic number.

It is not a de Polignac number, because 66717644012363 - 2² = 66717644012359 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66717644012299 and 66717644012308.

It is not an unprimeable number, because it can be changed into a prime (66717644012863) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 386248118 + ... + 386420811.

It is an arithmetic number, because the mean of its divisors is an integer number (8452998094200).

Almost surely, 2^{66717644012363} is an apocalyptic number.

66717644012363 is a deficient number, since it is larger than the sum of its proper divisors (906340741237).

66717644012363 is a wasteful number, since it uses less digits than its factorization.

66717644012363 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 772670101.

The product of its (nonzero) digits is 18289152, while the sum is 56.

The spelling of 66717644012363 in words is "sixty-six trillion, seven hundred seventeen billion, six hundred forty-four million, twelve thousand, three hundred sixty-three".