660867686383 has 2 divisors, whose sum is σ = 660867686384. Its totient is φ = 660867686382.

The previous prime is 660867686363. The next prime is 660867686399. The reversal of 660867686383 is 383686768066.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 660867686383 - 2⁵ = 660867686351 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (660867686363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 330433843191 + 330433843192.

It is an arithmetic number, because the mean of its divisors is an integer number (330433843192).

Almost surely, 2^660867686383 is an apocalyptic number.

660867686383 is a deficient number, since it is larger than the sum of its proper divisors (1).

660867686383 is an equidigital number, since it uses as much as digits as its factorization.

660867686383 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 250822656, while the sum is 67.

The spelling of 660867686383 in words is "six hundred sixty billion, eight hundred sixty-seven million, six hundred eighty-six thousand, three hundred eighty-three".