561011056001 has 16 divisors (see below), whose sum is σ = 665526637440. Its totient is φ = 467036225280.

The previous prime is 561011055931. The next prime is 561011056003. The reversal of 561011056001 is 100650110165.

561011056001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-561011056001 is a prime.

It is a super-2 number, since 2×561011056001² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (561011056003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40534421 + ... + 40548258.

It is an arithmetic number, because the mean of its divisors is an integer number (41595414840).

Almost surely, 2^561011056001 is an apocalyptic number.

It is an amenable number.

561011056001 is a deficient number, since it is larger than the sum of its proper divisors (104515581439).

561011056001 is a wasteful number, since it uses less digits than its factorization.

561011056001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81082744.

The product of its (nonzero) digits is 900, while the sum is 26.

Adding to 561011056001 its reverse (100650110165), we get a palindrome (661661166166).

The spelling of 561011056001 in words is "five hundred sixty-one billion, eleven million, fifty-six thousand, one".