22154506547 has 4 divisors (see below), whose sum is σ = 22278274920. Its totient is φ = 22030738176.

The previous prime is 22154506501. The next prime is 22154506553. The reversal of 22154506547 is 74560545122.

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

It is a cyclic number.

It is not a de Polignac number, because 22154506547 - 2¹⁶ = 22154441011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22154506447) 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, 61883918 + ... + 61884275.

It is an arithmetic number, because the mean of its divisors is an integer number (5569568730).

Almost surely, 2^22154506547 is an apocalyptic number.

22154506547 is a deficient number, since it is larger than the sum of its proper divisors (123768373).

22154506547 is a wasteful number, since it uses less digits than its factorization.

22154506547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123768372.

The product of its (nonzero) digits is 336000, while the sum is 41.

The spelling of 22154506547 in words is "twenty-two billion, one hundred fifty-four million, five hundred six thousand, five hundred forty-seven".