6011100561 has 4 divisors (see below), whose sum is σ = 8014800752. Its totient is φ = 4007400372.

The previous prime is 6011100559. The next prime is 6011100583. The reversal of 6011100561 is 1650011106.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 6011100561 - 2¹ = 6011100559 is a prime.

It is a super-2 number, since 2×6011100561² = 72266659908909029442, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6011100521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1001850091 + ... + 1001850096.

It is an arithmetic number, because the mean of its divisors is an integer number (2003700188).

Almost surely, 2^6011100561 is an apocalyptic number.

It is an amenable number.

6011100561 is a deficient number, since it is larger than the sum of its proper divisors (2003700191).

6011100561 is a wasteful number, since it uses less digits than its factorization.

6011100561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2003700190.

The product of its (nonzero) digits is 180, while the sum is 21.

The square root of 6011100561 is about 77531.2876263512. The cubic root of 6011100561 is about 1818.2405167937.

Adding to 6011100561 its reverse (1650011106), we get a palindrome (7661111667).

The spelling of 6011100561 in words is "six billion, eleven million, one hundred thousand, five hundred sixty-one".