40035545521 has 2 divisors, whose sum is σ = 40035545522. Its totient is φ = 40035545520.

The previous prime is 40035545507. The next prime is 40035545573. The reversal of 40035545521 is 12554553004.

40035545521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36609082225 + 3426463296 = 191335^2 + 58536^2 .

It is a cyclic number.

It is not a de Polignac number, because 40035545521 - 2⁷ = 40035545393 is a prime.

It is a super-2 number, since 2×40035545521² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (40035545621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20017772760 + 20017772761.

It is an arithmetic number, because the mean of its divisors is an integer number (20017772761).

Almost surely, 2^40035545521 is an apocalyptic number.

It is an amenable number.

40035545521 is a deficient number, since it is larger than the sum of its proper divisors (1).

40035545521 is an equidigital number, since it uses as much as digits as its factorization.

40035545521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60000, while the sum is 34.

The spelling of 40035545521 in words is "forty billion, thirty-five million, five hundred forty-five thousand, five hundred twenty-one".