1000043062561 has 16 divisors (see below), whose sum is σ = 1042959080448. Its totient is φ = 957801096000.

The previous prime is 1000043062511. The next prime is 1000043062621. The reversal of 1000043062561 is 1652603400001.

It is a cyclic number.

It is not a de Polignac number, because 1000043062561 - 2³¹ = 997895578913 is a prime.

It is a super-2 number, since 2×1000043062561² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1000043062511) 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 15 ways as a sum of consecutive naturals, for example, 7564716 + ... + 7695778.

It is an arithmetic number, because the mean of its divisors is an integer number (65184942528).

Almost surely, 2^{1000043062561} is an apocalyptic number.

It is an amenable number.

1000043062561 is a deficient number, since it is larger than the sum of its proper divisors (42916017887).

1000043062561 is a wasteful number, since it uses less digits than its factorization.

1000043062561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133632.

The product of its (nonzero) digits is 4320, while the sum is 28.

Adding to 1000043062561 its reverse (1652603400001), we get a palindrome (2652646462562).

The spelling of 1000043062561 in words is "one trillion, forty-three million, sixty-two thousand, five hundred sixty-one".