436861671146869 has 2 divisors, whose sum is σ = 436861671146870. Its totient is φ = 436861671146868.

The previous prime is 436861671146863. The next prime is 436861671146947. The reversal of 436861671146869 is 968641176168634.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 320828638656100 + 116033032490769 = 17911690^2 + 10771863^2 .

It is a cyclic number.

It is not a de Polignac number, because 436861671146869 - 2⁵ = 436861671146837 is a prime.

It is a super-2 number, since 2×436861671146869² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 436861671146795 and 436861671146804.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (436861671146863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 218430835573434 + 218430835573435.

It is an arithmetic number, because the mean of its divisors is an integer number (218430835573435).

Almost surely, 2^{436861671146869} is an apocalyptic number.

It is an amenable number.

436861671146869 is a deficient number, since it is larger than the sum of its proper divisors (1).

436861671146869 is an equidigital number, since it uses as much as digits as its factorization.

436861671146869 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1504935936, while the sum is 76.

The spelling of 436861671146869 in words is "four hundred thirty-six trillion, eight hundred sixty-one billion, six hundred seventy-one million, one hundred forty-six thousand, eight hundred sixty-nine".