40301320028261 has 2 divisors, whose sum is σ = 40301320028262. Its totient is φ = 40301320028260.

The previous prime is 40301320028257. The next prime is 40301320028279. The reversal of 40301320028261 is 16282002310304.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26075259683236 + 14226060345025 = 5106394^2 + 3771745^2 .

It is a cyclic number.

It is not a de Polignac number, because 40301320028261 - 2² = 40301320028257 is a prime.

It is a super-2 number, since 2×40301320028261² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40301320028201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20150660014130 + 20150660014131.

It is an arithmetic number, because the mean of its divisors is an integer number (20150660014131).

Almost surely, 2^{40301320028261} is an apocalyptic number.

It is an amenable number.

40301320028261 is a deficient number, since it is larger than the sum of its proper divisors (1).

40301320028261 is an equidigital number, since it uses as much as digits as its factorization.

40301320028261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 32.

Adding to 40301320028261 its reverse (16282002310304), we get a palindrome (56583322338565).

The spelling of 40301320028261 in words is "forty trillion, three hundred one billion, three hundred twenty million, twenty-eight thousand, two hundred sixty-one".