340342123545 has 16 divisors (see below), whose sum is σ = 605052664320. Its totient is φ = 181515799152.

The previous prime is 340342123427. The next prime is 340342123577. The reversal of 340342123545 is 545321243043.

340342123545 is a `hidden beast` number, since 3 + 40 + 34 + 21 + 23 + 545 = 666.

It is not a de Polignac number, because 340342123545 - 2⁷ = 340342123417 is a prime.

It is a super-2 number, since 2×340342123545² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1260526249 + ... + 1260526518.

It is an arithmetic number, because the mean of its divisors is an integer number (37815791520).

Almost surely, 2^340342123545 is an apocalyptic number.

It is an amenable number.

340342123545 is a deficient number, since it is larger than the sum of its proper divisors (264710540775).

340342123545 is a wasteful number, since it uses less digits than its factorization.

340342123545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2521052781 (or 2521052775 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 36.

Adding to 340342123545 its reverse (545321243043), we get a palindrome (885663366588).

The spelling of 340342123545 in words is "three hundred forty billion, three hundred forty-two million, one hundred twenty-three thousand, five hundred forty-five".