20403054218 has 8 divisors (see below), whose sum is σ = 30651450948. Its totient is φ = 10185903904.

The previous prime is 20403054193. The next prime is 20403054223. The reversal of 20403054218 is 81245030402.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 20308245049 + 94809169 = 142507^2 + 9737^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7809971 + ... + 7812582.

Almost surely, 2^20403054218 is an apocalyptic number.

20403054218 is a deficient number, since it is larger than the sum of its proper divisors (10248396730).

20403054218 is a wasteful number, since it uses less digits than its factorization.

20403054218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15623208.

The product of its (nonzero) digits is 7680, while the sum is 29.

The spelling of 20403054218 in words is "twenty billion, four hundred three million, fifty-four thousand, two hundred eighteen".