20713383680 has 288 divisors, whose sum is σ = 56575205568. Its totient is φ = 7199129600.

The previous prime is 20713383679. The next prime is 20713383683. The reversal of 20713383680 is 8638331702.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20713383683) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30595502 + ... + 30596178.

It is an arithmetic number, because the mean of its divisors is an integer number (196441686).

Almost surely, 2^20713383680 is an apocalyptic number.

20713383680 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 20713383680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28287602784).

20713383680 is an abundant number, since it is smaller than the sum of its proper divisors (35861821888).

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

20713383680 is a wasteful number, since it uses less digits than its factorization.

20713383680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 803 (or 789 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 41.

The spelling of 20713383680 in words is "twenty billion, seven hundred thirteen million, three hundred eighty-three thousand, six hundred eighty".