3451595969581 has 2 divisors, whose sum is σ = 3451595969582. Its totient is φ = 3451595969580.

The previous prime is 3451595969551. The next prime is 3451595969623. The reversal of 3451595969581 is 1859695951543.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3446388038025 + 5207931556 = 1856445^2 + 72166^2 .

It is a cyclic number.

It is not a de Polignac number, because 3451595969581 - 2¹³ = 3451595961389 is a prime.

It is a super-2 number, since 2×3451595969581² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3451595969581.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3451595969531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1725797984790 + 1725797984791.

It is an arithmetic number, because the mean of its divisors is an integer number (1725797984791).

Almost surely, 2^{3451595969581} is an apocalyptic number.

It is an amenable number.

3451595969581 is a deficient number, since it is larger than the sum of its proper divisors (1).

3451595969581 is an equidigital number, since it uses as much as digits as its factorization.

3451595969581 is an evil number, because the sum of its binary digits is even.

The product of its digits is 262440000, while the sum is 70.

The spelling of 3451595969581 in words is "three trillion, four hundred fifty-one billion, five hundred ninety-five million, nine hundred sixty-nine thousand, five hundred eighty-one".