678712045071 has 16 divisors (see below), whose sum is σ = 907713834624. Its totient is φ = 451092927264.

The previous prime is 678712045049. The next prime is 678712045087. The reversal of 678712045071 is 170540217876.

It is not a de Polignac number, because 678712045071 - 2¹⁹ = 678711520783 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 678712045071.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678712045871) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6331300 + ... + 6437606.

It is an arithmetic number, because the mean of its divisors is an integer number (56732114664).

Almost surely, 2^678712045071 is an apocalyptic number.

678712045071 is a deficient number, since it is larger than the sum of its proper divisors (229001789553).

678712045071 is a wasteful number, since it uses less digits than its factorization.

678712045071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112790.

The product of its (nonzero) digits is 658560, while the sum is 48.

The spelling of 678712045071 in words is "six hundred seventy-eight billion, seven hundred twelve million, forty-five thousand, seventy-one".