1345840742459 has 2 divisors, whose sum is σ = 1345840742460. Its totient is φ = 1345840742458.

The previous prime is 1345840742399. The next prime is 1345840742479. The reversal of 1345840742459 is 9542470485431.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1345840742459 is a prime.

It is a super-2 number, since 2×1345840742459² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1345840742479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 672920371229 + 672920371230.

It is an arithmetic number, because the mean of its divisors is an integer number (672920371230).

Almost surely, 2^{1345840742459} is an apocalyptic number.

1345840742459 is a deficient number, since it is larger than the sum of its proper divisors (1).

1345840742459 is an equidigital number, since it uses as much as digits as its factorization.

1345840742459 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19353600, while the sum is 56.

The spelling of 1345840742459 in words is "one trillion, three hundred forty-five billion, eight hundred forty million, seven hundred forty-two thousand, four hundred fifty-nine".