42261563009 has 2 divisors, whose sum is σ = 42261563010. Its totient is φ = 42261563008.

The previous prime is 42261562979. The next prime is 42261563023. The reversal of 42261563009 is 90036516224.

42261563009 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41913553984 + 348009025 = 204728^2 + 18655^2 .

It is a cyclic number.

It is not a de Polignac number, because 42261563009 - 2⁸ = 42261562753 is a prime.

It is not a weakly prime, because it can be changed into another prime (42261563209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21130781504 + 21130781505.

It is an arithmetic number, because the mean of its divisors is an integer number (21130781505).

Almost surely, 2^42261563009 is an apocalyptic number.

It is an amenable number.

42261563009 is a deficient number, since it is larger than the sum of its proper divisors (1).

42261563009 is an equidigital number, since it uses as much as digits as its factorization.

42261563009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 77760, while the sum is 38.

The spelling of 42261563009 in words is "forty-two billion, two hundred sixty-one million, five hundred sixty-three thousand, nine".