5518821011 has 12 divisors (see below), whose sum is σ = 6075518736. Its totient is φ = 5009355120.

The previous prime is 5518820999. The next prime is 5518821019. The reversal of 5518821011 is 1101288155.

It is not a de Polignac number, because 5518821011 - 2²² = 5514626707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5518821019) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44090 + ... + 113936.

It is an arithmetic number, because the mean of its divisors is an integer number (506293228).

Almost surely, 2^5518821011 is an apocalyptic number.

5518821011 is a deficient number, since it is larger than the sum of its proper divisors (556697725).

5518821011 is a wasteful number, since it uses less digits than its factorization.

5518821011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70522 (or 70511 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 32.

The square root of 5518821011 is about 74288.7677310642. The cubic root of 5518821011 is about 1767.1853518232.

The spelling of 5518821011 in words is "five billion, five hundred eighteen million, eight hundred twenty-one thousand, eleven".