22051550665 has 16 divisors (see below), whose sum is σ = 26638243200. Its totient is φ = 17524003840.

The previous prime is 22051550641. The next prime is 22051550707. The reversal of 22051550665 is 56605515022.

It is not a de Polignac number, because 22051550665 - 2¹⁹ = 22051026377 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, 487980 + ... + 531250.

It is an arithmetic number, because the mean of its divisors is an integer number (1664890200).

Almost surely, 2^22051550665 is an apocalyptic number.

It is an amenable number.

22051550665 is a deficient number, since it is larger than the sum of its proper divisors (4586692535).

22051550665 is a wasteful number, since it uses less digits than its factorization.

22051550665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43952.

The product of its (nonzero) digits is 90000, while the sum is 37.

The spelling of 22051550665 in words is "twenty-two billion, fifty-one million, five hundred fifty thousand, six hundred sixty-five".