4091275561 has 8 divisors (see below), whose sum is σ = 4225758464. Its totient is φ = 3956949360.

The previous prime is 4091275553. The next prime is 4091275571. The reversal of 4091275561 is 1655721904.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4091275561 - 2³ = 4091275553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4091275571) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15115 + ... + 91711.

It is an arithmetic number, because the mean of its divisors is an integer number (528219808).

Almost surely, 2^4091275561 is an apocalyptic number.

It is an amenable number.

4091275561 is a deficient number, since it is larger than the sum of its proper divisors (134482903).

4091275561 is a wasteful number, since it uses less digits than its factorization.

4091275561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78351.

The product of its (nonzero) digits is 75600, while the sum is 40.

The square root of 4091275561 is about 63963.0796710102. The cubic root of 4091275561 is about 1599.3846020055.

The spelling of 4091275561 in words is "four billion, ninety-one million, two hundred seventy-five thousand, five hundred sixty-one".