1647434512342 has 16 divisors (see below), whose sum is σ = 2472508480464. Its totient is φ = 823265100000.

The previous prime is 1647434512319. The next prime is 1647434512351. The reversal of 1647434512342 is 2432154347461.

It is a junction number, because it is equal to n+sod(n) for n = 1647434512292 and 1647434512301.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81300492 + ... + 81320752.

It is an arithmetic number, because the mean of its divisors is an integer number (154531780029).

Almost surely, 2^{1647434512342} is an apocalyptic number.

1647434512342 is a deficient number, since it is larger than the sum of its proper divisors (825073968122).

1647434512342 is a wasteful number, since it uses less digits than its factorization.

1647434512342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40575.

The product of its digits is 1935360, while the sum is 46.

The spelling of 1647434512342 in words is "one trillion, six hundred forty-seven billion, four hundred thirty-four million, five hundred twelve thousand, three hundred forty-two".