22665016551 has 4 divisors (see below), whose sum is σ = 30220022072. Its totient is φ = 15110011032.

The previous prime is 22665016541. The next prime is 22665016553. The reversal of 22665016551 is 15561056622.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 22665016551 - 2¹⁷ = 22664885479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22665016553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3777502756 + ... + 3777502761.

It is an arithmetic number, because the mean of its divisors is an integer number (7555005518).

Almost surely, 2^22665016551 is an apocalyptic number.

22665016551 is a deficient number, since it is larger than the sum of its proper divisors (7555005521).

22665016551 is an equidigital number, since it uses as much as digits as its factorization.

22665016551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7555005520.

The product of its (nonzero) digits is 108000, while the sum is 39.

The spelling of 22665016551 in words is "twenty-two billion, six hundred sixty-five million, sixteen thousand, five hundred fifty-one".