130721530556 has 6 divisors (see below), whose sum is σ = 228762678480. Its totient is φ = 65360765276.

The previous prime is 130721530553. The next prime is 130721530637. The reversal of 130721530556 is 655035127031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130721530553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16340191316 + ... + 16340191323.

It is an arithmetic number, because the mean of its divisors is an integer number (38127113080).

Almost surely, 2^130721530556 is an apocalyptic number.

It is an amenable number.

130721530556 is a deficient number, since it is larger than the sum of its proper divisors (98041147924).

130721530556 is a wasteful number, since it uses less digits than its factorization.

130721530556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32680382643 (or 32680382641 counting only the distinct ones).

The product of its (nonzero) digits is 94500, while the sum is 38.

Adding to 130721530556 its reverse (655035127031), we get a palindrome (785756657587).

The spelling of 130721530556 in words is "one hundred thirty billion, seven hundred twenty-one million, five hundred thirty thousand, five hundred fifty-six".