130615252640 has 96 divisors (see below), whose sum is σ = 310639205520. Its totient is φ = 51898384384.

The previous prime is 130615252627. The next prime is 130615252673. The reversal of 130615252640 is 46252516031.

It can be written as a sum of positive squares in 8 ways, for example, as 31438126864 + 99177125776 = 177308^2 + 314924^2 .

It is a super-2 number, since 2×130615252640² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 130615252640.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15188822 + ... + 15197418.

Almost surely, 2^130615252640 is an apocalyptic number.

130615252640 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 130615252640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (155319602760).

130615252640 is an abundant number, since it is smaller than the sum of its proper divisors (180023952880).

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

130615252640 is a wasteful number, since it uses less digits than its factorization.

130615252640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9234 (or 9226 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 35.

Adding to 130615252640 its reverse (46252516031), we get a palindrome (176867768671).

The spelling of 130615252640 in words is "one hundred thirty billion, six hundred fifteen million, two hundred fifty-two thousand, six hundred forty".