22623438978505 has 8 divisors (see below), whose sum is σ = 27195177257352. Its totient is φ = 18067384194048.

The previous prime is 22623438978451. The next prime is 22623438978577. The reversal of 22623438978505 is 50587983432622.

It can be written as a sum of positive squares in 4 ways, for example, as 7118965723321 + 15504473255184 = 2668139^2 + 3937572^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22623438978505 - 2¹⁷ = 22623438847433 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3920870422 + ... + 3920876191.

It is an arithmetic number, because the mean of its divisors is an integer number (3399397157169).

Almost surely, 2^{22623438978505} is an apocalyptic number.

It is an amenable number.

22623438978505 is a deficient number, since it is larger than the sum of its proper divisors (4571738278847).

22623438978505 is an equidigital number, since it uses as much as digits as its factorization.

22623438978505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7841747195.

The product of its (nonzero) digits is 174182400, while the sum is 64.

The spelling of 22623438978505 in words is "twenty-two trillion, six hundred twenty-three billion, four hundred thirty-eight million, nine hundred seventy-eight thousand, five hundred five".