20206053904 has 15 divisors (see below), whose sum is σ = 39150331117. Its totient is φ = 10102742656.

The previous prime is 20206053893. The next prime is 20206053947. The reversal of 20206053904 is 40935060202.

The square root of 20206053904 is 142148.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 16563690000 + 3642363904 = 128700^2 + 60352^2 .

It is a super-2 number, since 2×20206053904² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 550824 + ... + 586360.

Almost surely, 2^20206053904 is an apocalyptic number.

20206053904 is the 142148-th square number.

It is an amenable number.

20206053904 is a deficient number, since it is larger than the sum of its proper divisors (18944277213).

20206053904 is an frugal number, since it uses more digits than its factorization.

20206053904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71082 (or 35539 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 31.

The spelling of 20206053904 in words is "twenty billion, two hundred six million, fifty-three thousand, nine hundred four".