40561101001 has 4 divisors (see below), whose sum is σ = 41657347012. Its totient is φ = 39464854992.

The previous prime is 40561100977. The next prime is 40561101019. The reversal of 40561101001 is 10010116504.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 26022529225 + 14538571776 = 161315^2 + 120576^2 .

It is a cyclic number.

It is not a de Polignac number, because 40561101001 - 2⁷ = 40561100873 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40561101001.

It is not an unprimeable number, because it can be changed into a prime (40561101071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 548122950 + ... + 548123023.

It is an arithmetic number, because the mean of its divisors is an integer number (10414336753).

Almost surely, 2^40561101001 is an apocalyptic number.

It is an amenable number.

40561101001 is a deficient number, since it is larger than the sum of its proper divisors (1096246011).

40561101001 is a wasteful number, since it uses less digits than its factorization.

40561101001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1096246010.

The product of its (nonzero) digits is 120, while the sum is 19.

Adding to 40561101001 its reverse (10010116504), we get a palindrome (50571217505).

The spelling of 40561101001 in words is "forty billion, five hundred sixty-one million, one hundred one thousand, one".