23040221723567 has 2 divisors, whose sum is σ = 23040221723568. Its totient is φ = 23040221723566.

The previous prime is 23040221723557. The next prime is 23040221723611. The reversal of 23040221723567 is 76532712204032.

It is an a-pointer prime, because the next prime (23040221723611) can be obtained adding 23040221723567 to its sum of digits (44).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23040221723567 - 2⁴ = 23040221723551 is a prime.

It is a super-2 number, since 2×23040221723567² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23040221723557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11520110861783 + 11520110861784.

It is an arithmetic number, because the mean of its divisors is an integer number (11520110861784).

Almost surely, 2^{23040221723567} is an apocalyptic number.

23040221723567 is a deficient number, since it is larger than the sum of its proper divisors (1).

23040221723567 is an equidigital number, since it uses as much as digits as its factorization.

23040221723567 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 846720, while the sum is 44.

Adding to 23040221723567 its reverse (76532712204032), we get a palindrome (99572933927599).

The spelling of 23040221723567 in words is "twenty-three trillion, forty billion, two hundred twenty-one million, seven hundred twenty-three thousand, five hundred sixty-seven".