4251046656869 has 2 divisors, whose sum is σ = 4251046656870. Its totient is φ = 4251046656868.

The previous prime is 4251046656803. The next prime is 4251046656881. The reversal of 4251046656869 is 9686566401524.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3510264544900 + 740782111969 = 1873570^2 + 860687^2 .

It is a cyclic number.

It is not a de Polignac number, because 4251046656869 - 2¹² = 4251046652773 is a prime.

It is a super-2 number, since 2×4251046656869² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4251046659869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2125523328434 + 2125523328435.

It is an arithmetic number, because the mean of its divisors is an integer number (2125523328435).

Almost surely, 2^{4251046656869} is an apocalyptic number.

It is an amenable number.

4251046656869 is a deficient number, since it is larger than the sum of its proper divisors (1).

4251046656869 is an equidigital number, since it uses as much as digits as its factorization.

4251046656869 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 74649600, while the sum is 62.

The spelling of 4251046656869 in words is "four trillion, two hundred fifty-one billion, forty-six million, six hundred fifty-six thousand, eight hundred sixty-nine".