42850471024909 has 2 divisors, whose sum is σ = 42850471024910. Its totient is φ = 42850471024908.

The previous prime is 42850471024891. The next prime is 42850471024913. The reversal of 42850471024909 is 90942017405824.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40749774438025 + 2100696586884 = 6383555^2 + 1449378^2 .

It is a cyclic number.

It is not a de Polignac number, because 42850471024909 - 2¹⁷ = 42850470893837 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42850471024909.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42850471024709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21425235512454 + 21425235512455.

It is an arithmetic number, because the mean of its divisors is an integer number (21425235512455).

Almost surely, 2^{42850471024909} is an apocalyptic number.

It is an amenable number.

42850471024909 is a deficient number, since it is larger than the sum of its proper divisors (1).

42850471024909 is an equidigital number, since it uses as much as digits as its factorization.

42850471024909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5806080, while the sum is 55.

The spelling of 42850471024909 in words is "forty-two trillion, eight hundred fifty billion, four hundred seventy-one million, twenty-four thousand, nine hundred nine".