3451443561 has 32 divisors (see below), whose sum is σ = 5255475200. Its totient is φ = 2237835600.

The previous prime is 3451443553. The next prime is 3451443587. The reversal of 3451443561 is 1653441543.

3451443561 is a `hidden beast` number, since 3 + 4 + 51 + 4 + 43 + 561 = 666.

It is not a de Polignac number, because 3451443561 - 2³ = 3451443553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3451443161) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 130836 + ... + 154986.

It is an arithmetic number, because the mean of its divisors is an integer number (164233600).

Almost surely, 2^3451443561 is an apocalyptic number.

It is an amenable number.

3451443561 is a deficient number, since it is larger than the sum of its proper divisors (1804031639).

3451443561 is a wasteful number, since it uses less digits than its factorization.

3451443561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24306 (or 24300 counting only the distinct ones).

The product of its digits is 86400, while the sum is 36.

The square root of 3451443561 is about 58748.9877444710. The cubic root of 3451443561 is about 1511.2405286059.

The spelling of 3451443561 in words is "three billion, four hundred fifty-one million, four hundred forty-three thousand, five hundred sixty-one".