5515616309 has 16 divisors (see below), whose sum is σ = 6340134528. Its totient is φ = 4700305152.

The previous prime is 5515616273. The next prime is 5515616311. The reversal of 5515616309 is 9036165155.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5515616309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5515616329) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1281449 + ... + 1285745.

It is an arithmetic number, because the mean of its divisors is an integer number (396258408).

Almost surely, 2^5515616309 is an apocalyptic number.

It is an amenable number.

5515616309 is a deficient number, since it is larger than the sum of its proper divisors (824518219).

5515616309 is a wasteful number, since it uses less digits than its factorization.

5515616309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5324.

The product of its (nonzero) digits is 121500, while the sum is 41.

The square root of 5515616309 is about 74267.1953758858. The cubic root of 5515616309 is about 1766.8432256714.

The spelling of 5515616309 in words is "five billion, five hundred fifteen million, six hundred sixteen thousand, three hundred nine".