398114645678 has 16 divisors (see below), whose sum is σ = 606259352160. Its totient is φ = 196050066336.

The previous prime is 398114645653. The next prime is 398114645713. The reversal of 398114645678 is 876546411893.

It is a super-2 number, since 2×398114645678² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 398114645678.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5431301 + ... + 5504112.

It is an arithmetic number, because the mean of its divisors is an integer number (37891209510).

Almost surely, 2^398114645678 is an apocalyptic number.

398114645678 is a deficient number, since it is larger than the sum of its proper divisors (208144706482).

398114645678 is a wasteful number, since it uses less digits than its factorization.

398114645678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10935691.

The product of its digits is 34836480, while the sum is 62.

The spelling of 398114645678 in words is "three hundred ninety-eight billion, one hundred fourteen million, six hundred forty-five thousand, six hundred seventy-eight".