40511552489 has 2 divisors, whose sum is σ = 40511552490. Its totient is φ = 40511552488.

The previous prime is 40511552467. The next prime is 40511552539. The reversal of 40511552489 is 98425511504.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25373941264 + 15137611225 = 159292^2 + 123035^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40511552489 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (40511552189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20255776244 + 20255776245.

It is an arithmetic number, because the mean of its divisors is an integer number (20255776245).

Almost surely, 2^40511552489 is an apocalyptic number.

It is an amenable number.

40511552489 is a deficient number, since it is larger than the sum of its proper divisors (1).

40511552489 is an equidigital number, since it uses as much as digits as its factorization.

40511552489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288000, while the sum is 44.

The spelling of 40511552489 in words is "forty billion, five hundred eleven million, five hundred fifty-two thousand, four hundred eighty-nine".