20134680720 has 480 divisors, whose sum is σ = 80558010624. Its totient is φ = 4069232640.

The previous prime is 20134680707. The next prime is 20134680721. The reversal of 20134680720 is 2708643102.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (20134680721) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 7520022 + ... + 7522698.

Almost surely, 2^20134680720 is an apocalyptic number.

20134680720 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 20134680720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40279005312).

20134680720 is an abundant number, since it is smaller than the sum of its proper divisors (60423329904).

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

20134680720 is a wasteful number, since it uses less digits than its factorization.

20134680720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2759 (or 2742 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 33.

The spelling of 20134680720 in words is "twenty billion, one hundred thirty-four million, six hundred eighty thousand, seven hundred twenty".