20723535286 has 4 divisors (see below), whose sum is σ = 31085302932. Its totient is φ = 10361767642.

The previous prime is 20723535281. The next prime is 20723535311. The reversal of 20723535286 is 68253532702.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20723535281) by changing a digit.

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 as a sum of consecutive naturals, namely, 5180883820 + ... + 5180883823.

It is an arithmetic number, because the mean of its divisors is an integer number (7771325733).

Almost surely, 2^20723535286 is an apocalyptic number.

20723535286 is a deficient number, since it is larger than the sum of its proper divisors (10361767646).

20723535286 is a wasteful number, since it uses less digits than its factorization.

20723535286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10361767645.

The product of its (nonzero) digits is 604800, while the sum is 43.

The spelling of 20723535286 in words is "twenty billion, seven hundred twenty-three million, five hundred thirty-five thousand, two hundred eighty-six".