3547378406805 has 32 divisors (see below), whose sum is σ = 5796780885504. Its totient is φ = 1851612973056.

The previous prime is 3547378406743. The next prime is 3547378406813. The reversal of 3547378406805 is 5086048737453.

It is a happy number.

It is not a de Polignac number, because 3547378406805 - 2¹² = 3547378402709 is a prime.

It is a super-2 number, since 2×3547378406805² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 23197957 + ... + 23350373.

It is an arithmetic number, because the mean of its divisors is an integer number (181149402672).

Almost surely, 2^{3547378406805} is an apocalyptic number.

It is an amenable number.

3547378406805 is a deficient number, since it is larger than the sum of its proper divisors (2249402478699).

3547378406805 is a wasteful number, since it uses less digits than its factorization.

3547378406805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185485.

The product of its (nonzero) digits is 67737600, while the sum is 60.

The spelling of 3547378406805 in words is "three trillion, five hundred forty-seven billion, three hundred seventy-eight million, four hundred six thousand, eight hundred five".