5511121345 has 16 divisors (see below), whose sum is σ = 6665904000. Its totient is φ = 4373906688.

The previous prime is 5511121309. The next prime is 5511121411. The reversal of 5511121345 is 5431211155.

It is a cyclic number.

It is not a de Polignac number, because 5511121345 - 2¹¹ = 5511119297 is a prime.

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, 1415161 + ... + 1419049.

It is an arithmetic number, because the mean of its divisors is an integer number (416619000).

Almost surely, 2^5511121345 is an apocalyptic number.

It is an amenable number.

5511121345 is a deficient number, since it is larger than the sum of its proper divisors (1154782655).

5511121345 is a wasteful number, since it uses less digits than its factorization.

5511121345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6072.

The product of its digits is 3000, while the sum is 28.

The square root of 5511121345 is about 74236.9270983114. The cubic root of 5511121345 is about 1766.3631309339.

The spelling of 5511121345 in words is "five billion, five hundred eleven million, one hundred twenty-one thousand, three hundred forty-five".