340128556647 has 48 divisors (see below), whose sum is σ = 509392128000. Its totient is φ = 201631446720.

The previous prime is 340128556643. The next prime is 340128556693. The reversal of 340128556647 is 746655821043.

It is not a de Polignac number, because 340128556647 - 2² = 340128556643 is a prime.

It is a super-3 number, since 3×340128556647³ (a number of 36 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 340128556647.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340128556643) 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 in 47 ways as a sum of consecutive naturals, for example, 34099953 + ... + 34109925.

It is an arithmetic number, because the mean of its divisors is an integer number (10612336000).

Almost surely, 2^340128556647 is an apocalyptic number.

340128556647 is a deficient number, since it is larger than the sum of its proper divisors (169263571353).

340128556647 is a wasteful number, since it uses less digits than its factorization.

340128556647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12044 (or 12033 counting only the distinct ones).

The product of its (nonzero) digits is 4838400, while the sum is 51.

The spelling of 340128556647 in words is "three hundred forty billion, one hundred twenty-eight million, five hundred fifty-six thousand, six hundred forty-seven".