130779815320 has 384 divisors, whose sum is σ = 383898009600. Its totient is φ = 39207168000.

The previous prime is 130779815297. The next prime is 130779815347. The reversal of 130779815320 is 23518977031.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 251016660 + ... + 251017180.

It is an arithmetic number, because the mean of its divisors is an integer number (999734400).

Almost surely, 2^130779815320 is an apocalyptic number.

130779815320 is a gapful number since it is divisible by the number (10) 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 130779815320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (191949004800).

130779815320 is an abundant number, since it is smaller than the sum of its proper divisors (253118194280).

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

130779815320 is a wasteful number, since it uses less digits than its factorization.

130779815320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 831 (or 816 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 46.

The spelling of 130779815320 in words is "one hundred thirty billion, seven hundred seventy-nine million, eight hundred fifteen thousand, three hundred twenty".