678259311342 has 32 divisors (see below), whose sum is σ = 1364474090880. Its totient is φ = 224760745440.

The previous prime is 678259311311. The next prime is 678259311347. The reversal of 678259311342 is 243113952876.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678259311347) 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, 18228417 + ... + 18265587.

It is an arithmetic number, because the mean of its divisors is an integer number (42639815340).

Almost surely, 2^678259311342 is an apocalyptic number.

678259311342 is an abundant number, since it is smaller than the sum of its proper divisors (686214779538).

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

678259311342 is a wasteful number, since it uses less digits than its factorization.

678259311342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54928.

The product of its digits is 2177280, while the sum is 51.

The spelling of 678259311342 in words is "six hundred seventy-eight billion, two hundred fifty-nine million, three hundred eleven thousand, three hundred forty-two".