1050005106561 has 16 divisors (see below), whose sum is σ = 1414910806848. Its totient is φ = 692556211200.

The previous prime is 1050005106547. The next prime is 1050005106569. The reversal of 1050005106561 is 1656015000501.

It is not a de Polignac number, because 1050005106561 - 2¹⁰ = 1050005105537 is a prime.

It is a super-2 number, since 2×1050005106561² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1050005106569) 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, 277021 + ... + 1475381.

It is an arithmetic number, because the mean of its divisors is an integer number (88431925428).

Almost surely, 2^{1050005106561} is an apocalyptic number.

It is an amenable number.

1050005106561 is a deficient number, since it is larger than the sum of its proper divisors (364905700287).

1050005106561 is a wasteful number, since it uses less digits than its factorization.

1050005106561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1201472.

The product of its (nonzero) digits is 4500, while the sum is 30.

The spelling of 1050005106561 in words is "one trillion, fifty billion, five million, one hundred six thousand, five hundred sixty-one".