678399953199 has 8 divisors (see below), whose sum is σ = 905012120880. Its totient is φ = 452027210496.

The previous prime is 678399953117. The next prime is 678399953213. The reversal of 678399953199 is 991359993876.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 678399953199 - 2⁸ = 678399952943 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678399903199) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59849632 + ... + 59860965.

It is an arithmetic number, because the mean of its divisors is an integer number (113126515110).

Almost surely, 2^678399953199 is an apocalyptic number.

678399953199 is a deficient number, since it is larger than the sum of its proper divisors (226612167681).

678399953199 is a wasteful number, since it uses less digits than its factorization.

678399953199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119712489.

The product of its digits is 892820880, while the sum is 78.

The spelling of 678399953199 in words is "six hundred seventy-eight billion, three hundred ninety-nine million, nine hundred fifty-three thousand, one hundred ninety-nine".