678283569854 has 16 divisors (see below), whose sum is σ = 1110418387056. Its totient is φ = 308171875200.

The previous prime is 678283569829. The next prime is 678283569863. The reversal of 678283569854 is 458965382876.

It is a super-2 number, since 2×678283569854² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6891947 + ... + 6989670.

It is an arithmetic number, because the mean of its divisors is an integer number (69401149191).

Almost surely, 2^678283569854 is an apocalyptic number.

678283569854 is a deficient number, since it is larger than the sum of its proper divisors (432134817202).

678283569854 is a wasteful number, since it uses less digits than its factorization.

678283569854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13883851.

The product of its digits is 696729600, while the sum is 71.

The spelling of 678283569854 in words is "six hundred seventy-eight billion, two hundred eighty-three million, five hundred sixty-nine thousand, eight hundred fifty-four".