1426421633641 has 2 divisors, whose sum is σ = 1426421633642. Its totient is φ = 1426421633640.

The previous prime is 1426421633617. The next prime is 1426421633647. The reversal of 1426421633641 is 1463361246241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1064258393641 + 362163240000 = 1031629^2 + 601800^2 .

It is a cyclic number.

It is not a de Polignac number, because 1426421633641 - 2⁷ = 1426421633513 is a prime.

It is not a weakly prime, because it can be changed into another prime (1426421633647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 713210816820 + 713210816821.

It is an arithmetic number, because the mean of its divisors is an integer number (713210816821).

Almost surely, 2^{1426421633641} is an apocalyptic number.

It is an amenable number.

1426421633641 is a deficient number, since it is larger than the sum of its proper divisors (1).

1426421633641 is an equidigital number, since it uses as much as digits as its factorization.

1426421633641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 497664, while the sum is 43.

Adding to 1426421633641 its reverse (1463361246241), we get a palindrome (2889782879882).

The spelling of 1426421633641 in words is "one trillion, four hundred twenty-six billion, four hundred twenty-one million, six hundred thirty-three thousand, six hundred forty-one".