515504000000 has 616 divisors, whose sum is σ = 1468064021040. Its totient is φ = 179200000000.

The previous prime is 515503999979. The next prime is 515504000003. The reversal of 515504000000 is 405515.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (515504000003) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 5103999950 + ... + 5104000050.

Almost surely, 2^515504000000 is an apocalyptic number.

515504000000 is a gapful number since it is divisible by the number (50) 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 515504000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (734032010520).

515504000000 is an abundant number, since it is smaller than the sum of its proper divisors (952560021040).

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

515504000000 is an equidigital number, since it uses as much as digits as its factorization.

515504000000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191 (or 148 counting only the distinct ones).

The product of its (nonzero) digits is 500, while the sum is 20.

Adding to 515504000000 its reverse (405515), we get a palindrome (515504405515).

The spelling of 515504000000 in words is "five hundred fifteen billion, five hundred four million", and thus it is an aban number.