20711239396 has 27 divisors (see below), whose sum is σ = 37056443907. Its totient is φ = 10128667320.

The previous prime is 20711239391. The next prime is 20711239411. The reversal of 20711239396 is 69393211702.

The square root of 20711239396 is 143914.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20711239391) 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 8 ways as a sum of consecutive naturals, for example, 13527151 + ... + 13528681.

Almost surely, 2^20711239396 is an apocalyptic number.

20711239396 is the 143914-th square number.

It is an amenable number.

20711239396 is a deficient number, since it is larger than the sum of its proper divisors (16345204511).

20711239396 is an frugal number, since it uses more digits than its factorization.

20711239396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3160 (or 1580 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 43.

The spelling of 20711239396 in words is "twenty billion, seven hundred eleven million, two hundred thirty-nine thousand, three hundred ninety-six".