3406455056581 has 2 divisors, whose sum is σ = 3406455056582. Its totient is φ = 3406455056580.

The previous prime is 3406455056551. The next prime is 3406455056603. The reversal of 3406455056581 is 1856505546043.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3362327332225 + 44127724356 = 1833665^2 + 210066^2 .

It is a cyclic number.

It is not a de Polignac number, because 3406455056581 - 2³¹ = 3404307572933 is a prime.

It is a super-2 number, since 2×3406455056581² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3406455056551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1703227528290 + 1703227528291.

It is an arithmetic number, because the mean of its divisors is an integer number (1703227528291).

Almost surely, 2^{3406455056581} is an apocalyptic number.

It is an amenable number.

3406455056581 is a deficient number, since it is larger than the sum of its proper divisors (1).

3406455056581 is an equidigital number, since it uses as much as digits as its factorization.

3406455056581 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640000, while the sum is 52.

The spelling of 3406455056581 in words is "three trillion, four hundred six billion, four hundred fifty-five million, fifty-six thousand, five hundred eighty-one".