4272027561 has 20 divisors (see below), whose sum is σ = 6398825092. Its totient is φ = 2840362848.

The previous prime is 4272027499. The next prime is 4272027581. The reversal of 4272027561 is 1657202724.

It is a happy number.

4272027561 is a `hidden beast` number, since 4 + 2 + 72 + 0 + 27 + 561 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 3379213161 + 892814400 = 58131^2 + 29880^2 .

It is not a de Polignac number, because 4272027561 - 2⁷ = 4272027433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4272027581) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 40486 + ... + 100911.

Almost surely, 2^4272027561 is an apocalyptic number.

It is an amenable number.

4272027561 is a deficient number, since it is larger than the sum of its proper divisors (2126797531).

4272027561 is a wasteful number, since it uses less digits than its factorization.

4272027561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141782 (or 141773 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

The square root of 4272027561 is about 65360.7493913587. The cubic root of 4272027561 is about 1622.5995403962.

The spelling of 4272027561 in words is "four billion, two hundred seventy-two million, twenty-seven thousand, five hundred sixty-one".