8130508729420 has 432 divisors, whose sum is σ = 23566383933120. Its totient is φ = 2340393538560.

The previous prime is 8130508729379. The next prime is 8130508729429. The reversal of 8130508729420 is 249278050318.

It is a super-2 number, since 2×8130508729420² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is not an unprimeable number, because it can be changed into a prime (8130508729429) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 79041462 + ... + 79144258.

It is an arithmetic number, because the mean of its divisors is an integer number (54551814660).

Almost surely, 2^{8130508729420} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8130508729420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11783191966560).

8130508729420 is an abundant number, since it is smaller than the sum of its proper divisors (15435875203700).

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

8130508729420 is a wasteful number, since it uses less digits than its factorization.

8130508729420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102894 (or 102874 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 49.

The spelling of 8130508729420 in words is "eight trillion, one hundred thirty billion, five hundred eight million, seven hundred twenty-nine thousand, four hundred twenty".