678614447850 has 24 divisors (see below), whose sum is σ = 1682963831040. Its totient is φ = 180963852720.

The previous prime is 678614447843. The next prime is 678614447857. The reversal of 678614447850 is 58744416876.

It is an interprime number because it is at equal distance from previous prime (678614447843) and next prime (678614447857).

It is not an unprimeable number, because it can be changed into a prime (678614447857) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2262048010 + ... + 2262048309.

It is an arithmetic number, because the mean of its divisors is an integer number (70123492960).

Almost surely, 2^678614447850 is an apocalyptic number.

678614447850 is an abundant number, since it is smaller than the sum of its proper divisors (1004349383190).

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

678614447850 is a wasteful number, since it uses less digits than its factorization.

678614447850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4524096334 (or 4524096329 counting only the distinct ones).

The product of its (nonzero) digits is 36126720, while the sum is 60.

The spelling of 678614447850 in words is "six hundred seventy-eight billion, six hundred fourteen million, four hundred forty-seven thousand, eight hundred fifty".