3478404406561 has 8 divisors (see below), whose sum is σ = 3975909448320. Its totient is φ = 2981046896448.

The previous prime is 3478404406523. The next prime is 3478404406601. The reversal of 3478404406561 is 1656044048743.

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 3478404406561 - 2⁹ = 3478404406049 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3478404406499 and 3478404406508.

It is not an unprimeable number, because it can be changed into a prime (3478404401561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36832381 + ... + 36926698.

It is an arithmetic number, because the mean of its divisors is an integer number (496988681040).

Almost surely, 2^{3478404406561} is an apocalyptic number.

It is an amenable number.

3478404406561 is a deficient number, since it is larger than the sum of its proper divisors (497505041759).

3478404406561 is an equidigital number, since it uses as much as digits as its factorization.

3478404406561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73765823.

The product of its (nonzero) digits is 7741440, while the sum is 52.

The spelling of 3478404406561 in words is "three trillion, four hundred seventy-eight billion, four hundred four million, four hundred six thousand, five hundred sixty-one".