678078137024 has 28 divisors (see below), whose sum is σ = 1345616860704. Its totient is φ = 339025069824.

The previous prime is 678078136993. The next prime is 678078137053. The reversal of 678078137024 is 420731870876.

It is a Cunningham number, because it is equal to 823455²-1.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1441049 + ... + 1852775.

Almost surely, 2^678078137024 is an apocalyptic number.

678078137024 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

678078137024 is a deficient number, since it is larger than the sum of its proper divisors (667538723680).

678078137024 is a wasteful number, since it uses less digits than its factorization.

678078137024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437472 (or 437462 counting only the distinct ones).

The product of its (nonzero) digits is 3161088, while the sum is 53.

The spelling of 678078137024 in words is "six hundred seventy-eight billion, seventy-eight million, one hundred thirty-seven thousand, twenty-four".