40044150245221 has 2 divisors, whose sum is σ = 40044150245222. Its totient is φ = 40044150245220.

The previous prime is 40044150245167. The next prime is 40044150245273. The reversal of 40044150245221 is 12254205144004.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31326073180900 + 8718077064321 = 5596970^2 + 2952639^2 .

It is a cyclic number.

It is not a de Polignac number, because 40044150245221 - 2²³ = 40044141856613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40044550245221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20022075122610 + 20022075122611.

It is an arithmetic number, because the mean of its divisors is an integer number (20022075122611).

Almost surely, 2^{40044150245221} is an apocalyptic number.

It is an amenable number.

40044150245221 is a deficient number, since it is larger than the sum of its proper divisors (1).

40044150245221 is an equidigital number, since it uses as much as digits as its factorization.

40044150245221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51200, while the sum is 34.

Adding to 40044150245221 its reverse (12254205144004), we get a palindrome (52298355389225).

The spelling of 40044150245221 in words is "forty trillion, forty-four billion, one hundred fifty million, two hundred forty-five thousand, two hundred twenty-one".