408745016896385 has 64 divisors (see below), whose sum is σ = 533988828172800. Its totient is φ = 298555666311168.

The previous prime is 408745016896361. The next prime is 408745016896397. The reversal of 408745016896385 is 583698610547804.

It is a cyclic number.

It is not a de Polignac number, because 408745016896385 - 2⁴⁰ = 407645505268609 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 25025707679 + ... + 25025724011.

It is an arithmetic number, because the mean of its divisors is an integer number (8343575440200).

Almost surely, 2^{408745016896385} is an apocalyptic number.

It is an amenable number.

408745016896385 is a deficient number, since it is larger than the sum of its proper divisors (125243811276415).

408745016896385 is a wasteful number, since it uses less digits than its factorization.

408745016896385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20682.

The product of its (nonzero) digits is 1393459200, while the sum is 74.

The spelling of 408745016896385 in words is "four hundred eight trillion, seven hundred forty-five billion, sixteen million, eight hundred ninety-six thousand, three hundred eighty-five".