3547807228681 has 4 divisors (see below), whose sum is σ = 3548217530752. Its totient is φ = 3547396926612.

The previous prime is 3547807228657. The next prime is 3547807228697. The reversal of 3547807228681 is 1868227087453.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3547807228681 - 2⁵ = 3547807228649 is a prime.

It is a super-2 number, since 2×3547807228681² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3547807228181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 205138065 + ... + 205155358.

It is an arithmetic number, because the mean of its divisors is an integer number (887054382688).

Almost surely, 2^{3547807228681} is an apocalyptic number.

It is an amenable number.

3547807228681 is a deficient number, since it is larger than the sum of its proper divisors (410302071).

3547807228681 is an equidigital number, since it uses as much as digits as its factorization.

3547807228681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410302070.

The product of its (nonzero) digits is 36126720, while the sum is 61.

The spelling of 3547807228681 in words is "three trillion, five hundred forty-seven billion, eight hundred seven million, two hundred twenty-eight thousand, six hundred eighty-one".