20384642234 has 32 divisors (see below), whose sum is σ = 35765971200. Its totient is φ = 8610301440.

The previous prime is 20384642231. The next prime is 20384642237. The reversal of 20384642234 is 43224648302.

It is an interprime number because it is at equal distance from previous prime (20384642231) and next prime (20384642237).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20384642231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 315419 + ... + 374510.

It is an arithmetic number, because the mean of its divisors is an integer number (1117686600).

Almost surely, 2^20384642234 is an apocalyptic number.

20384642234 is a deficient number, since it is larger than the sum of its proper divisors (15381328966).

20384642234 is a wasteful number, since it uses less digits than its factorization.

20384642234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 690038.

The product of its (nonzero) digits is 221184, while the sum is 38.

The spelling of 20384642234 in words is "twenty billion, three hundred eighty-four million, six hundred forty-two thousand, two hundred thirty-four".