40940261563 has 2 divisors, whose sum is σ = 40940261564. Its totient is φ = 40940261562.

The previous prime is 40940261521. The next prime is 40940261581. The reversal of 40940261563 is 36516204904.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40940261563 - 2²¹ = 40938164411 is a prime.

It is a super-3 number, since 3×40940261563³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (40940261963) 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, 20470130781 + 20470130782.

It is an arithmetic number, because the mean of its divisors is an integer number (20470130782).

Almost surely, 2^40940261563 is an apocalyptic number.

40940261563 is a deficient number, since it is larger than the sum of its proper divisors (1).

40940261563 is an equidigital number, since it uses as much as digits as its factorization.

40940261563 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 155520, while the sum is 40.

The spelling of 40940261563 in words is "forty billion, nine hundred forty million, two hundred sixty-one thousand, five hundred sixty-three".