340212551545 has 4 divisors (see below), whose sum is σ = 408255061860. Its totient is φ = 272170041232.

The previous prime is 340212551533. The next prime is 340212551557. The reversal of 340212551545 is 545155212043.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 545155212043 = 13 ⋅41935016311.

It is an interprime number because it is at equal distance from previous prime (340212551533) and next prime (340212551557).

It can be written as a sum of positive squares in 2 ways, for example, as 124696559376 + 215515992169 = 353124^2 + 464237^2 .

It is a cyclic number.

It is not a de Polignac number, because 340212551545 - 2⁵ = 340212551513 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34021255150 + ... + 34021255159.

It is an arithmetic number, because the mean of its divisors is an integer number (102063765465).

Almost surely, 2^340212551545 is an apocalyptic number.

It is an amenable number.

340212551545 is a deficient number, since it is larger than the sum of its proper divisors (68042510315).

340212551545 is an equidigital number, since it uses as much as digits as its factorization.

340212551545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68042510314.

The product of its (nonzero) digits is 120000, while the sum is 37.

Adding to 340212551545 its reverse (545155212043), we get a palindrome (885367763588).

The spelling of 340212551545 in words is "three hundred forty billion, two hundred twelve million, five hundred fifty-one thousand, five hundred forty-five".