1433686838681 has 2 divisors, whose sum is σ = 1433686838682. Its totient is φ = 1433686838680.

The previous prime is 1433686838663. The next prime is 1433686838687. The reversal of 1433686838681 is 1868386863341.

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., 1190030083225 + 243656755456 = 1090885^2 + 493616^2 .

It is a cyclic number.

It is not a de Polignac number, because 1433686838681 - 2¹⁰ = 1433686837657 is a prime.

It is a super-2 number, since 2×1433686838681² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1433686838687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 716843419340 + 716843419341.

It is an arithmetic number, because the mean of its divisors is an integer number (716843419341).

Almost surely, 2^{1433686838681} is an apocalyptic number.

It is an amenable number.

1433686838681 is a deficient number, since it is larger than the sum of its proper divisors (1).

1433686838681 is an equidigital number, since it uses as much as digits as its factorization.

1433686838681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 95551488, while the sum is 65.

The spelling of 1433686838681 in words is "one trillion, four hundred thirty-three billion, six hundred eighty-six million, eight hundred thirty-eight thousand, six hundred eighty-one".