40021326113 has 2 divisors, whose sum is σ = 40021326114. Its totient is φ = 40021326112.

The previous prime is 40021326109. The next prime is 40021326139. The reversal of 40021326113 is 31162312004.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32779826704 + 7241499409 = 181052^2 + 85097^2 .

It is a cyclic number.

It is not a de Polignac number, because 40021326113 - 2² = 40021326109 is a prime.

It is not a weakly prime, because it can be changed into another prime (40021326173) 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 as a sum of consecutive naturals, namely, 20010663056 + 20010663057.

It is an arithmetic number, because the mean of its divisors is an integer number (20010663057).

Almost surely, 2^40021326113 is an apocalyptic number.

It is an amenable number.

40021326113 is a deficient number, since it is larger than the sum of its proper divisors (1).

40021326113 is an equidigital number, since it uses as much as digits as its factorization.

40021326113 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 40021326113 its reverse (31162312004), we get a palindrome (71183638117).

The spelling of 40021326113 in words is "forty billion, twenty-one million, three hundred twenty-six thousand, one hundred thirteen".