20206450234 has 16 divisors (see below), whose sum is σ = 31946442120. Its totient is φ = 9570783040.

The previous prime is 20206450219. The next prime is 20206450247. The reversal of 20206450234 is 43205460202.

It can be written as a sum of positive squares in 4 ways, for example, as 14461265025 + 5745185209 = 120255^2 + 75797^2 .

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 3283597 + ... + 3289744.

Almost surely, 2^20206450234 is an apocalyptic number.

20206450234 is a deficient number, since it is larger than the sum of its proper divisors (11739991886).

20206450234 is a wasteful number, since it uses less digits than its factorization.

20206450234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6573425.

The product of its (nonzero) digits is 11520, while the sum is 28.

The spelling of 20206450234 in words is "twenty billion, two hundred six million, four hundred fifty thousand, two hundred thirty-four".