22051800555 has 16 divisors (see below), whose sum is σ = 36421039104. Its totient is φ = 11381574240.

The previous prime is 22051800503. The next prime is 22051800569. The reversal of 22051800555 is 55500815022.

It is not a de Polignac number, because 22051800555 - 2¹⁰ = 22051799531 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, 23711149 + ... + 23712078.

It is an arithmetic number, because the mean of its divisors is an integer number (2276314944).

Almost surely, 2^22051800555 is an apocalyptic number.

22051800555 is a deficient number, since it is larger than the sum of its proper divisors (14369238549).

22051800555 is a wasteful number, since it uses less digits than its factorization.

22051800555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47423266.

The product of its (nonzero) digits is 20000, while the sum is 33.

The spelling of 22051800555 in words is "twenty-two billion, fifty-one million, eight hundred thousand, five hundred fifty-five".