1434401321261 has 2 divisors, whose sum is σ = 1434401321262. Its totient is φ = 1434401321260.

The previous prime is 1434401321237. The next prime is 1434401321333. The reversal of 1434401321261 is 1621231044341.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 999738017161 + 434663304100 = 999869^2 + 659290^2 .

It is a cyclic number.

It is not a de Polignac number, because 1434401321261 - 2¹⁴ = 1434401304877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1434401321161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 717200660630 + 717200660631.

It is an arithmetic number, because the mean of its divisors is an integer number (717200660631).

Almost surely, 2^{1434401321261} is an apocalyptic number.

It is an amenable number.

1434401321261 is a deficient number, since it is larger than the sum of its proper divisors (1).

1434401321261 is an equidigital number, since it uses as much as digits as its factorization.

1434401321261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 32.

The spelling of 1434401321261 in words is "one trillion, four hundred thirty-four billion, four hundred one million, three hundred twenty-one thousand, two hundred sixty-one".