1001005050561 has 16 divisors (see below), whose sum is σ = 1414068614784. Its totient is φ = 627688260864.

The previous prime is 1001005050559. The next prime is 1001005050601. The reversal of 1001005050561 is 1650505001001.

It is not a de Polignac number, because 1001005050561 - 2¹ = 1001005050559 is a prime.

It is a super-2 number, since 2×1001005050561² (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 (1001005050511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6063685 + ... + 6226578.

It is an arithmetic number, because the mean of its divisors is an integer number (88379288424).

Almost surely, 2^{1001005050561} is an apocalyptic number.

It is an amenable number.

1001005050561 is a deficient number, since it is larger than the sum of its proper divisors (413063564223).

1001005050561 is a wasteful number, since it uses less digits than its factorization.

1001005050561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12291880.

The product of its (nonzero) digits is 750, while the sum is 24.

The spelling of 1001005050561 in words is "one trillion, one billion, five million, fifty thousand, five hundred sixty-one".