20365723500 has 96 divisors (see below), whose sum is σ = 59849549760. Its totient is φ = 5380992000.

The previous prime is 20365723489. The next prime is 20365723501. The reversal of 20365723500 is 532756302.

It is not an unprimeable number, because it can be changed into a prime (20365723501) 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 31 ways as a sum of consecutive naturals, for example, 101220 + ... + 225780.

It is an arithmetic number, because the mean of its divisors is an integer number (623432810).

Almost surely, 2^20365723500 is an apocalyptic number.

20365723500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20365723500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29924774880).

20365723500 is an abundant number, since it is smaller than the sum of its proper divisors (39483826260).

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

20365723500 is a wasteful number, since it uses less digits than its factorization.

20365723500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124692 (or 124680 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 33.

The spelling of 20365723500 in words is "twenty billion, three hundred sixty-five million, seven hundred twenty-three thousand, five hundred".