42950565893 has 2 divisors, whose sum is σ = 42950565894. Its totient is φ = 42950565892.

The previous prime is 42950565829. The next prime is 42950565923. The reversal of 42950565893 is 39856505924.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27944805889 + 15005760004 = 167167^2 + 122498^2 .

It is a cyclic number.

It is not a de Polignac number, because 42950565893 - 2⁶ = 42950565829 is a prime.

It is a super-2 number, since 2×42950565893² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42950561893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21475282946 + 21475282947.

It is an arithmetic number, because the mean of its divisors is an integer number (21475282947).

Almost surely, 2^42950565893 is an apocalyptic number.

It is an amenable number.

42950565893 is a deficient number, since it is larger than the sum of its proper divisors (1).

42950565893 is an equidigital number, since it uses as much as digits as its factorization.

42950565893 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664000, while the sum is 56.

The spelling of 42950565893 in words is "forty-two billion, nine hundred fifty million, five hundred sixty-five thousand, eight hundred ninety-three".