20237799840 has 384 divisors, whose sum is σ = 69074208000. Its totient is φ = 4964843520.

The previous prime is 20237799823. The next prime is 20237799847. The reversal of 20237799840 is 4899773202.

It is a super-3 number, since 3×20237799840³ (a number of 32 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (20237799847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 72020500 + ... + 72020780.

It is an arithmetic number, because the mean of its divisors is an integer number (179880750).

Almost surely, 2^20237799840 is an apocalyptic number.

20237799840 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 20237799840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34537104000).

20237799840 is an abundant number, since it is smaller than the sum of its proper divisors (48836408160).

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

20237799840 is a wasteful number, since it uses less digits than its factorization.

20237799840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520 (or 512 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 51.

The spelling of 20237799840 in words is "twenty billion, two hundred thirty-seven million, seven hundred ninety-nine thousand, eight hundred forty".