408005366778853 has 8 divisors (see below), whose sum is σ = 408256031570688. Its totient is φ = 407754731436864.

The previous prime is 408005366778731. The next prime is 408005366778913. The reversal of 408005366778853 is 358877663500804.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-408005366778853 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 (408005366776853) 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, 20386650 + ... + 35094532.

It is an arithmetic number, because the mean of its divisors is an integer number (51032003946336).

Almost surely, 2^{408005366778853} is an apocalyptic number.

It is an amenable number.

408005366778853 is a deficient number, since it is larger than the sum of its proper divisors (250664791835).

408005366778853 is a wasteful number, since it uses less digits than its factorization.

408005366778853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14724923.

The product of its (nonzero) digits is 812851200, while the sum is 70.

The spelling of 408005366778853 in words is "four hundred eight trillion, five billion, three hundred sixty-six million, seven hundred seventy-eight thousand, eight hundred fifty-three".