42850678511989 has 2 divisors, whose sum is σ = 42850678511990. Its totient is φ = 42850678511988.

The previous prime is 42850678511951. The next prime is 42850678512011. The reversal of 42850678511989 is 98911587605824.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42337079823025 + 513598688964 = 6506695^2 + 716658^2 .

It is a cyclic number.

It is not a de Polignac number, because 42850678511989 - 2¹¹ = 42850678509941 is a prime.

It is a super-2 number, since 2×42850678511989² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42850678511929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21425339255994 + 21425339255995.

It is an arithmetic number, because the mean of its divisors is an integer number (21425339255995).

Almost surely, 2^{42850678511989} is an apocalyptic number.

It is an amenable number.

42850678511989 is a deficient number, since it is larger than the sum of its proper divisors (1).

42850678511989 is an equidigital number, since it uses as much as digits as its factorization.

42850678511989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 348364800, while the sum is 73.

The spelling of 42850678511989 in words is "forty-two trillion, eight hundred fifty billion, six hundred seventy-eight million, five hundred eleven thousand, nine hundred eighty-nine".