398855236068 has 72 divisors (see below), whose sum is σ = 1010698311168. Its totient is φ = 132625008768.

The previous prime is 398855236027. The next prime is 398855236097. The reversal of 398855236068 is 860632558893.

398855236068 is a `hidden beast` number, since 3 + 98 + 85 + 52 + 360 + 68 = 666.

It is a super-3 number, since 3×398855236068³ (a number of 36 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 398855235996 and 398855236014.

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, 25483021 + ... + 25498667.

It is an arithmetic number, because the mean of its divisors is an integer number (14037476544).

Almost surely, 2^398855236068 is an apocalyptic number.

It is an amenable number.

398855236068 is an abundant number, since it is smaller than the sum of its proper divisors (611843075100).

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

398855236068 is a wasteful number, since it uses less digits than its factorization.

398855236068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17353 (or 17348 counting only the distinct ones).

The product of its (nonzero) digits is 74649600, while the sum is 63.

The spelling of 398855236068 in words is "three hundred ninety-eight billion, eight hundred fifty-five million, two hundred thirty-six thousand, sixty-eight".