678401122346 has 16 divisors (see below), whose sum is σ = 1030233120000. Its totient is φ = 335015371008.

The previous prime is 678401122339. The next prime is 678401122411. The reversal of 678401122346 is 643221104876.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 678401122297 and 678401122306.

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, 6268346 + ... + 6375653.

It is an arithmetic number, because the mean of its divisors is an integer number (64389570000).

Almost surely, 2^678401122346 is an apocalyptic number.

678401122346 is a deficient number, since it is larger than the sum of its proper divisors (351831997654).

678401122346 is a wasteful number, since it uses less digits than its factorization.

678401122346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12644333.

The product of its (nonzero) digits is 387072, while the sum is 44.

The spelling of 678401122346 in words is "six hundred seventy-eight billion, four hundred one million, one hundred twenty-two thousand, three hundred forty-six".