1340430998633 has 2 divisors, whose sum is σ = 1340430998634. Its totient is φ = 1340430998632.

The previous prime is 1340430998609. The next prime is 1340430998639. The reversal of 1340430998633 is 3368990340431.

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., 1225951629529 + 114479369104 = 1107227^2 + 338348^2 .

It is a cyclic number.

It is not a de Polignac number, because 1340430998633 - 2²⁴ = 1340414221417 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1340430998639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 670215499316 + 670215499317.

It is an arithmetic number, because the mean of its divisors is an integer number (670215499317).

Almost surely, 2^{1340430998633} is an apocalyptic number.

It is an amenable number.

1340430998633 is a deficient number, since it is larger than the sum of its proper divisors (1).

1340430998633 is an equidigital number, since it uses as much as digits as its factorization.

1340430998633 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5038848, while the sum is 53.

The spelling of 1340430998633 in words is "one trillion, three hundred forty billion, four hundred thirty million, nine hundred ninety-eight thousand, six hundred thirty-three".