678259311312 has 80 divisors (see below), whose sum is σ = 1958079049920. Its totient is φ = 200520115200.

The previous prime is 678259311311. The next prime is 678259311347. The reversal of 678259311312 is 213113952876.

It is a super-2 number, since 2×678259311312² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678259311311) 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, 15643987 + ... + 15687282.

It is an arithmetic number, because the mean of its divisors is an integer number (24475988124).

Almost surely, 2^678259311312 is an apocalyptic number.

It is an amenable number.

678259311312 is an abundant number, since it is smaller than the sum of its proper divisors (1279819738608).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

678259311312 is a wasteful number, since it uses less digits than its factorization.

678259311312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31331332 (or 31331326 counting only the distinct ones).

The product of its digits is 544320, while the sum is 48.

The spelling of 678259311312 in words is "six hundred seventy-eight billion, two hundred fifty-nine million, three hundred eleven thousand, three hundred twelve".