20408164398 has 24 divisors (see below), whose sum is σ = 44240110200. Its totient is φ = 6799272144.

The previous prime is 20408164393. The next prime is 20408164429. The reversal of 20408164398 is 89346180402.

It is a happy number.

20408164398 is a `hidden beast` number, since 204 + 0 + 8 + 1 + 6 + 439 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20408164393) 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, 250833 + ... + 322076.

It is an arithmetic number, because the mean of its divisors is an integer number (1843337925).

Almost surely, 2^20408164398 is an apocalyptic number.

20408164398 is an abundant number, since it is smaller than the sum of its proper divisors (23831945802).

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

20408164398 is a wasteful number, since it uses less digits than its factorization.

20408164398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 574896 (or 574893 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The spelling of 20408164398 in words is "twenty billion, four hundred eight million, one hundred sixty-four thousand, three hundred ninety-eight".