40364768281 has 2 divisors, whose sum is σ = 40364768282. Its totient is φ = 40364768280.

The previous prime is 40364768251. The next prime is 40364768287. The reversal of 40364768281 is 18286746304.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40344337881 + 20430400 = 200859^2 + 4520^2 .

It is a cyclic number.

It is not a de Polignac number, because 40364768281 - 2¹³ = 40364760089 is a prime.

It is a super-2 number, since 2×40364768281² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (40364768287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20182384140 + 20182384141.

It is an arithmetic number, because the mean of its divisors is an integer number (20182384141).

Almost surely, 2^40364768281 is an apocalyptic number.

It is an amenable number.

40364768281 is a deficient number, since it is larger than the sum of its proper divisors (1).

40364768281 is an equidigital number, since it uses as much as digits as its factorization.

40364768281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1548288, while the sum is 49.

The spelling of 40364768281 in words is "forty billion, three hundred sixty-four million, seven hundred sixty-eight thousand, two hundred eighty-one".