130621516 has 12 divisors (see below), whose sum is σ = 232462440. Its totient is φ = 64203680.

The previous prime is 130621511. The next prime is 130621607. The reversal of 130621516 is 615126031.

It is a super-4 number, since 4×130621516⁴ (a number of 34 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (130621511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 276505 + ... + 276976.

It is an arithmetic number, because the mean of its divisors is an integer number (19371870).

Almost surely, 2^130621516 is an apocalyptic number.

It is an amenable number.

130621516 is a deficient number, since it is larger than the sum of its proper divisors (101840924).

130621516 is a wasteful number, since it uses less digits than its factorization.

130621516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 553544 (or 553542 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 130621516 is about 11428.9770320882. The cubic root of 130621516 is about 507.3857197767.

Adding to 130621516 its reverse (615126031), we get a palindrome (745747547).

It can be divided in two parts, 1306 and 21516, that added together give a palindrome (22822).

The spelling of 130621516 in words is "one hundred thirty million, six hundred twenty-one thousand, five hundred sixteen".