340400406673 has 2 divisors, whose sum is σ = 340400406674. Its totient is φ = 340400406672.

The previous prime is 340400406641. The next prime is 340400406751. The reversal of 340400406673 is 376604004043.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 335017543249 + 5382863424 = 578807^2 + 73368^2 .

It is a cyclic number.

It is not a de Polignac number, because 340400406673 - 2⁵ = 340400406641 is a prime.

It is not a weakly prime, because it can be changed into another prime (340400409673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170200203336 + 170200203337.

It is an arithmetic number, because the mean of its divisors is an integer number (170200203337).

Almost surely, 2^340400406673 is an apocalyptic number.

It is an amenable number.

340400406673 is a deficient number, since it is larger than the sum of its proper divisors (1).

340400406673 is an equidigital number, since it uses as much as digits as its factorization.

340400406673 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145152, while the sum is 37.

The spelling of 340400406673 in words is "three hundred forty billion, four hundred million, four hundred six thousand, six hundred seventy-three".