40275575581 has 2 divisors, whose sum is σ = 40275575582. Its totient is φ = 40275575580.

The previous prime is 40275575567. The next prime is 40275575591. The reversal of 40275575581 is 18557557204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40266843556 + 8732025 = 200666^2 + 2955^2 .

It is a cyclic number.

It is not a de Polignac number, because 40275575581 - 2⁷ = 40275575453 is a prime.

It is a super-2 number, since 2×40275575581² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40275575591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20137787790 + 20137787791.

It is an arithmetic number, because the mean of its divisors is an integer number (20137787791).

Almost surely, 2^40275575581 is an apocalyptic number.

It is an amenable number.

40275575581 is a deficient number, since it is larger than the sum of its proper divisors (1).

40275575581 is an equidigital number, since it uses as much as digits as its factorization.

40275575581 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1960000, while the sum is 49.

The spelling of 40275575581 in words is "forty billion, two hundred seventy-five million, five hundred seventy-five thousand, five hundred eighty-one".