23220354505 has 16 divisors (see below), whose sum is σ = 28252823040. Its totient is φ = 18318863808.

The previous prime is 23220354503. The next prime is 23220354523. The reversal of 23220354505 is 50545302232.

It is a cyclic number.

It is not a de Polignac number, because 23220354505 - 2¹ = 23220354503 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23220354503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28759 + ... + 217411.

It is an arithmetic number, because the mean of its divisors is an integer number (1765801440).

Almost surely, 2^23220354505 is an apocalyptic number.

It is an amenable number.

23220354505 is a deficient number, since it is larger than the sum of its proper divisors (5032468535).

23220354505 is a wasteful number, since it uses less digits than its factorization.

23220354505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189000.

The product of its (nonzero) digits is 36000, while the sum is 31.

Adding to 23220354505 its reverse (50545302232), we get a palindrome (73765656737).

The spelling of 23220354505 in words is "twenty-three billion, two hundred twenty million, three hundred fifty-four thousand, five hundred five".