130504797972 has 72 divisors (see below), whose sum is σ = 342716259200. Its totient is φ = 42939964080.

The previous prime is 130504797971. The next prime is 130504797977. The reversal of 130504797972 is 279797405031.

130504797972 is a `hidden beast` number, since 1 + 30 + 5 + 0 + 479 + 79 + 72 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130504797971) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33366697 + ... + 33370607.

Almost surely, 2^130504797972 is an apocalyptic number.

130504797972 is a gapful number since it is divisible by the number (12) 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 130504797972, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (171358129600).

130504797972 is an abundant number, since it is smaller than the sum of its proper divisors (212211461228).

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

130504797972 is an frugal number, since it uses more digits than its factorization.

130504797972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7914 (or 3995 counting only the distinct ones).

The product of its (nonzero) digits is 3333960, while the sum is 54.

The spelling of 130504797972 in words is "one hundred thirty billion, five hundred four million, seven hundred ninety-seven thousand, nine hundred seventy-two".