340454145491 has 2 divisors, whose sum is σ = 340454145492. Its totient is φ = 340454145490.

The previous prime is 340454145487. The next prime is 340454145511. The reversal of 340454145491 is 194541454043.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 340454145491 - 2² = 340454145487 is a prime.

It is not a weakly prime, because it can be changed into another prime (340454145431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170227072745 + 170227072746.

It is an arithmetic number, because the mean of its divisors is an integer number (170227072746).

Almost surely, 2^340454145491 is an apocalyptic number.

340454145491 is a deficient number, since it is larger than the sum of its proper divisors (1).

340454145491 is an equidigital number, since it uses as much as digits as its factorization.

340454145491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 691200, while the sum is 44.

The spelling of 340454145491 in words is "three hundred forty billion, four hundred fifty-four million, one hundred forty-five thousand, four hundred ninety-one".