20467218394 has 16 divisors (see below), whose sum is σ = 35480894400. Its totient is φ = 8673106464.

The previous prime is 20467218367. The next prime is 20467218509. The reversal of 20467218394 is 49381276402.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8211924 + ... + 8214415.

It is an arithmetic number, because the mean of its divisors is an integer number (2217555900).

Almost surely, 2^20467218394 is an apocalyptic number.

20467218394 is a deficient number, since it is larger than the sum of its proper divisors (15013676006).

20467218394 is a wasteful number, since it uses less digits than its factorization.

20467218394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16426437.

The product of its (nonzero) digits is 580608, while the sum is 46.

The spelling of 20467218394 in words is "twenty billion, four hundred sixty-seven million, two hundred eighteen thousand, three hundred ninety-four".