561040760511 has 36 divisors (see below), whose sum is σ = 1028401254504. Its totient is φ = 291449743200.

The previous prime is 561040760461. The next prime is 561040760551. The reversal of 561040760511 is 115067040165.

It is a happy number.

561040760511 is a `hidden beast` number, since 5 + 6 + 1 + 0 + 40 + 7 + 605 + 1 + 1 = 666.

It is not a de Polignac number, because 561040760511 - 2⁶ = 561040760447 is a prime.

It is a super-2 number, since 2×561040760511² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561040760551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 57822480 + ... + 57832181.

It is an arithmetic number, because the mean of its divisors is an integer number (28566701514).

Almost surely, 2^561040760511 is an apocalyptic number.

561040760511 is a deficient number, since it is larger than the sum of its proper divisors (467360493993).

561040760511 is a wasteful number, since it uses less digits than its factorization.

561040760511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115654692 (or 115654682 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 36.

The spelling of 561040760511 in words is "five hundred sixty-one billion, forty million, seven hundred sixty thousand, five hundred eleven".