22047005551 has 4 divisors (see below), whose sum is σ = 22047325552. Its totient is φ = 22046685552.

The previous prime is 22047005503. The next prime is 22047005569. The reversal of 22047005551 is 15550074022.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 22047005551 - 2⁷ = 22047005423 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 (22047005251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9411 + ... + 210196.

It is an arithmetic number, because the mean of its divisors is an integer number (5511831388).

Almost surely, 2^22047005551 is an apocalyptic number.

22047005551 is a deficient number, since it is larger than the sum of its proper divisors (320001).

22047005551 is a wasteful number, since it uses less digits than its factorization.

22047005551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320000.

The product of its (nonzero) digits is 14000, while the sum is 31.

Adding to 22047005551 its reverse (15550074022), we get a palindrome (37597079573).

The spelling of 22047005551 in words is "twenty-two billion, forty-seven million, five thousand, five hundred fifty-one".