408368680877 has 8 divisors (see below), whose sum is σ = 408943193400. Its totient is φ = 407794342144.

The previous prime is 408368680859. The next prime is 408368680891. The reversal of 408368680877 is 778086863804.

It can be written as a sum of positive squares in 4 ways, for example, as 222589578436 + 185779102441 = 471794^2 + 431021^2 .

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 408368680877 - 2¹⁴ = 408368664493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (408368680477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5080283 + ... + 5160039.

It is an arithmetic number, because the mean of its divisors is an integer number (51117899175).

Almost surely, 2^408368680877 is an apocalyptic number.

It is an amenable number.

408368680877 is a deficient number, since it is larger than the sum of its proper divisors (574512523).

408368680877 is an equidigital number, since it uses as much as digits as its factorization.

408368680877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86895.

The product of its (nonzero) digits is 86704128, while the sum is 65.

The spelling of 408368680877 in words is "four hundred eight billion, three hundred sixty-eight million, six hundred eighty thousand, eight hundred seventy-seven".