42861670913 has 2 divisors, whose sum is σ = 42861670914. Its totient is φ = 42861670912.

The previous prime is 42861670909. The next prime is 42861670931. The reversal of 42861670913 is 31907616824.

Together with next prime (42861670931) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41537293249 + 1324377664 = 203807^2 + 36392^2 .

It is a cyclic number.

It is not a de Polignac number, because 42861670913 - 2² = 42861670909 is a prime.

It is not a weakly prime, because it can be changed into another prime (42861670513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21430835456 + 21430835457.

It is an arithmetic number, because the mean of its divisors is an integer number (21430835457).

Almost surely, 2^42861670913 is an apocalyptic number.

It is an amenable number.

42861670913 is a deficient number, since it is larger than the sum of its proper divisors (1).

42861670913 is an equidigital number, since it uses as much as digits as its factorization.

42861670913 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 435456, while the sum is 47.

The spelling of 42861670913 in words is "forty-two billion, eight hundred sixty-one million, six hundred seventy thousand, nine hundred thirteen".