3445816276681 has 9 divisors (see below), whose sum is σ = 3503346238119. Its totient is φ = 3389216107800.

The previous prime is 3445816276673. The next prime is 3445816276703. The reversal of 3445816276681 is 1866726185443.

The square root of 3445816276681 is 1856291.

It is a perfect power (a square), and thus also a powerful number.

3445816276681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 112051537081 + 3333764739600 = 334741^2 + 1825860^2 .

It is not a de Polignac number, because 3445816276681 - 2³ = 3445816276673 is a prime.

It is a super-2 number, since 2×3445816276681² (a number of 26 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (61).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3445816273681) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 113218536 + ... + 113248966.

Almost surely, 2^{3445816276681} is an apocalyptic number.

3445816276681 is the 1856291-st square number.

3445816276681 is the 928146-th centered octagonal number.

It is an amenable number.

3445816276681 is a deficient number, since it is larger than the sum of its proper divisors (57529961438).

3445816276681 is an frugal number, since it uses more digits than its factorization.

3445816276681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60984 (or 30492 counting only the distinct ones).

The product of its digits is 46448640, while the sum is 61.

The spelling of 3445816276681 in words is "three trillion, four hundred forty-five billion, eight hundred sixteen million, two hundred seventy-six thousand, six hundred eighty-one".