40242544513 has 2 divisors, whose sum is σ = 40242544514. Its totient is φ = 40242544512.

The previous prime is 40242544429. The next prime is 40242544519. The reversal of 40242544513 is 31544524204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34385397489 + 5857147024 = 185433^2 + 76532^2 .

It is a cyclic number.

It is not a de Polignac number, because 40242544513 - 2³³ = 31652609921 is a prime.

It is not a weakly prime, because it can be changed into another prime (40242544519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20121272256 + 20121272257.

It is an arithmetic number, because the mean of its divisors is an integer number (20121272257).

Almost surely, 2^40242544513 is an apocalyptic number.

It is an amenable number.

40242544513 is a deficient number, since it is larger than the sum of its proper divisors (1).

40242544513 is an equidigital number, since it uses as much as digits as its factorization.

40242544513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 76800, while the sum is 34.

The spelling of 40242544513 in words is "forty billion, two hundred forty-two million, five hundred forty-four thousand, five hundred thirteen".