678399953202 has 48 divisors (see below), whose sum is σ = 1505872164888. Its totient is φ = 220595132160.

The previous prime is 678399953117. The next prime is 678399953213. The reversal of 678399953202 is 202359993876.

678399953202 is a `hidden beast` number, since 6 + 7 + 8 + 3 + 9 + 99 + 532 + 0 + 2 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 404011513161 + 274388440041 = 635619^2 + 523821^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 678399953202.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8056188 + ... + 8139960.

Almost surely, 2^678399953202 is an apocalyptic number.

678399953202 is an abundant number, since it is smaller than the sum of its proper divisors (827472211686).

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

678399953202 is a wasteful number, since it uses less digits than its factorization.

678399953202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94795 (or 94792 counting only the distinct ones).

The product of its (nonzero) digits is 44089920, while the sum is 63.

The spelling of 678399953202 in words is "six hundred seventy-eight billion, three hundred ninety-nine million, nine hundred fifty-three thousand, two hundred two".