340358553649 has 2 divisors, whose sum is σ = 340358553650. Its totient is φ = 340358553648.

The previous prime is 340358553641. The next prime is 340358553683. The reversal of 340358553649 is 946355853043.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 267255913024 + 73102640625 = 516968^2 + 270375^2 .

It is an emirp because it is prime and its reverse (946355853043) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 340358553649 - 2³ = 340358553641 is a prime.

It is a super-2 number, since 2×340358553649² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 340358553649.

It is not a weakly prime, because it can be changed into another prime (340358553641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170179276824 + 170179276825.

It is an arithmetic number, because the mean of its divisors is an integer number (170179276825).

Almost surely, 2^340358553649 is an apocalyptic number.

It is an amenable number.

340358553649 is a deficient number, since it is larger than the sum of its proper divisors (1).

340358553649 is an equidigital number, since it uses as much as digits as its factorization.

340358553649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328000, while the sum is 55.

The spelling of 340358553649 in words is "three hundred forty billion, three hundred fifty-eight million, five hundred fifty-three thousand, six hundred forty-nine".