663285923929 has 2 divisors, whose sum is σ = 663285923930. Its totient is φ = 663285923928.

The previous prime is 663285923921. The next prime is 663285923939. The reversal of 663285923929 is 929329582366.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 641152518400 + 22133405529 = 800720^2 + 148773^2 .

It is a cyclic number.

It is not a de Polignac number, because 663285923929 - 2³ = 663285923921 is a prime.

It is not a weakly prime, because it can be changed into another prime (663285923921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 331642961964 + 331642961965.

It is an arithmetic number, because the mean of its divisors is an integer number (331642961965).

Almost surely, 2^663285923929 is an apocalyptic number.

It is an amenable number.

663285923929 is a deficient number, since it is larger than the sum of its proper divisors (1).

663285923929 is an equidigital number, since it uses as much as digits as its factorization.

663285923929 is an evil number, because the sum of its binary digits is even.

The product of its digits is 75582720, while the sum is 64.

The spelling of 663285923929 in words is "six hundred sixty-three billion, two hundred eighty-five million, nine hundred twenty-three thousand, nine hundred twenty-nine".