23040221523505 has 8 divisors (see below), whose sum is σ = 27736598947752. Its totient is φ = 18373288472448.

The previous prime is 23040221523491. The next prime is 23040221523511. The reversal of 23040221523505 is 50532512204032.

It can be written as a sum of positive squares in 4 ways, for example, as 350775461169 + 22689446062336 = 592263^2 + 4763344^2 .

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 23040221523505 - 2⁹ = 23040221522993 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7361091574 + ... + 7361094703.

It is an arithmetic number, because the mean of its divisors is an integer number (3467074868469).

Almost surely, 2^{23040221523505} is an apocalyptic number.

It is an amenable number.

23040221523505 is a deficient number, since it is larger than the sum of its proper divisors (4696377424247).

23040221523505 is a wasteful number, since it uses less digits than its factorization.

23040221523505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14722186595.

The product of its (nonzero) digits is 72000, while the sum is 34.

Adding to 23040221523505 its reverse (50532512204032), we get a palindrome (73572733727537).

The spelling of 23040221523505 in words is "twenty-three trillion, forty billion, two hundred twenty-one million, five hundred twenty-three thousand, five hundred five".