40053121091 has 2 divisors, whose sum is σ = 40053121092. Its totient is φ = 40053121090.

The previous prime is 40053121067. The next prime is 40053121217. The reversal of 40053121091 is 19012135004.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40053121091 - 2⁶ = 40053121027 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40053121091.

It is not a weakly prime, because it can be changed into another prime (40053121021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20026560545 + 20026560546.

It is an arithmetic number, because the mean of its divisors is an integer number (20026560546).

Almost surely, 2^40053121091 is an apocalyptic number.

40053121091 is a deficient number, since it is larger than the sum of its proper divisors (1).

40053121091 is an equidigital number, since it uses as much as digits as its factorization.

40053121091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 26.

Adding to 40053121091 its reverse (19012135004), we get a palindrome (59065256095).

The spelling of 40053121091 in words is "forty billion, fifty-three million, one hundred twenty-one thousand, ninety-one".