5515000000 has 112 divisors (see below), whose sum is σ = 13692152448. Its totient is φ = 2204000000.

The previous prime is 5514999949. The next prime is 5515000031. The reversal of 5515000000 is 5155.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4999449 + ... + 5000551.

Almost surely, 2^5515000000 is an apocalyptic number.

5515000000 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 5515000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6846076224).

5515000000 is an abundant number, since it is smaller than the sum of its proper divisors (8177152448).

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

5515000000 is an frugal number, since it uses more digits than its factorization.

5515000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1150 (or 1110 counting only the distinct ones).

The product of its (nonzero) digits is 125, while the sum is 16.

The square root of 5515000000 is about 74263.0459919333. The cubic root of 5515000000 is about 1766.7774148365. Note that the first 3 decimals are identical.

Adding to 5515000000 its reverse (5155), we get a palindrome (5515005155).

The spelling of 5515000000 in words is "five billion, five hundred fifteen million", and thus it is an aban number.