678912214434 has 32 divisors (see below), whose sum is σ = 1414484206080. Its totient is φ = 216994723200.

The previous prime is 678912214399. The next prime is 678912214457. The reversal of 678912214434 is 434412219876.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16723147 + ... + 16763694.

It is an arithmetic number, because the mean of its divisors is an integer number (44202631440).

Almost surely, 2^678912214434 is an apocalyptic number.

678912214434 is an abundant number, since it is smaller than the sum of its proper divisors (735571991646).

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

678912214434 is a wasteful number, since it uses less digits than its factorization.

678912214434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33486986.

The product of its digits is 2322432, while the sum is 51.

The spelling of 678912214434 in words is "six hundred seventy-eight billion, nine hundred twelve million, two hundred fourteen thousand, four hundred thirty-four".