5509581380 has 12 divisors (see below), whose sum is σ = 11570120940. Its totient is φ = 2203832544.

The previous prime is 5509581367. The next prime is 5509581397. The reversal of 5509581380 is 831859055.

It can be written as a sum of positive squares in 2 ways, for example, as 2223311104 + 3286270276 = 47152^2 + 57326^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137739515 + ... + 137739554.

It is an arithmetic number, because the mean of its divisors is an integer number (964176745).

Almost surely, 2^5509581380 is an apocalyptic number.

It is an amenable number.

5509581380 is an abundant number, since it is smaller than the sum of its proper divisors (6060539560).

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

5509581380 is a wasteful number, since it uses less digits than its factorization.

5509581380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275479078 (or 275479076 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 44.

The square root of 5509581380 is about 74226.5544128245. The cubic root of 5509581380 is about 1766.1985914733.

The spelling of 5509581380 in words is "five billion, five hundred nine million, five hundred eighty-one thousand, three hundred eighty".