20323753086 has 96 divisors (see below), whose sum is σ = 50749735680. Its totient is φ = 5312466432.

The previous prime is 20323753081. The next prime is 20323753139. The reversal of 20323753086 is 68035732302.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20323753081) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 789405 + ... + 814743.

It is an arithmetic number, because the mean of its divisors is an integer number (528643080).

Almost surely, 2^20323753086 is an apocalyptic number.

20323753086 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 20323753086, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25374867840).

20323753086 is an abundant number, since it is smaller than the sum of its proper divisors (30425982594).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20323753086 is a wasteful number, since it uses less digits than its factorization.

20323753086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25490 (or 25477 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 39.

The spelling of 20323753086 in words is "twenty billion, three hundred twenty-three million, seven hundred fifty-three thousand, eighty-six".