3534765561 has 10 divisors (see below), whose sum is σ = 5280328922. Its totient is φ = 2356510320.

The previous prime is 3534765551. The next prime is 3534765569. The reversal of 3534765561 is 1655674353.

3534765561 is a `hidden beast` number, since 3 + 53 + 47 + 6 + 556 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2413855161 + 1120910400 = 49131^2 + 33480^2 .

It is not a de Polignac number, because 3534765561 - 2¹⁵ = 3534732793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3534765569) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 21819460 + ... + 21819621.

Almost surely, 2^3534765561 is an apocalyptic number.

It is an amenable number.

3534765561 is a deficient number, since it is larger than the sum of its proper divisors (1745563361).

3534765561 is an equidigital number, since it uses as much as digits as its factorization.

3534765561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43639093 (or 43639084 counting only the distinct ones).

The product of its digits is 1134000, while the sum is 45.

The square root of 3534765561 is about 59453.8944140752. The cubic root of 3534765561 is about 1523.3050143514.

The spelling of 3534765561 in words is "three billion, five hundred thirty-four million, seven hundred sixty-five thousand, five hundred sixty-one".