10066011561 has 8 divisors (see below), whose sum is σ = 14912609760. Its totient is φ = 6710674356.

The previous prime is 10066011551. The next prime is 10066011589. The reversal of 10066011561 is 16511066001.

10066011561 is a `hidden beast` number, since 1 + 0 + 0 + 6 + 601 + 1 + 56 + 1 = 666.

It is not a de Polignac number, because 10066011561 - 2⁶ = 10066011497 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 372815243 = 10066011561 / (1 + 0 + 0 + 6 + 6 + 0 + 1 + 1 + 5 + 6 + 1).

It is not an unprimeable number, because it can be changed into a prime (10066011551) 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, 186407595 + ... + 186407648.

It is an arithmetic number, because the mean of its divisors is an integer number (1864076220).

Almost surely, 2^10066011561 is an apocalyptic number.

It is an amenable number.

10066011561 is a deficient number, since it is larger than the sum of its proper divisors (4846598199).

10066011561 is an equidigital number, since it uses as much as digits as its factorization.

10066011561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372815252 (or 372815246 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 27.

Adding to 10066011561 its reverse (16511066001), we get a palindrome (26577077562).

The spelling of 10066011561 in words is "ten billion, sixty-six million, eleven thousand, five hundred sixty-one".